Ever notice how nature doesn't stick to a single "theme"? Fields of wildflowers seamlessly transition into hardy shrubs, which give way to towering trees as you venture deeper into a landscape. This is not just coincidence. 



A recent study has brought to light nature's ingenious plan behind this apparent randomness in landscapes and habitats.



<h2 class="wp-block-heading" id="h-different-habitats-different-stories">Different habitats, different stories</h2>



A study conducted across 30 field sites in the UK has revealed the magic behind mother nature’s multi-faceted design. The research was led by a team of ecologists at the <a href="https://www.bristol.ac.uk" target="_blank" rel="noreferrer noopener">University of Bristol</a>.



The experts took on the task of answering some of the most pressing questions in conservation and land management. Their findings shed new light on the interplay of species across <a href="https://www.earth.com/news/landscapes-with-different-habitats-greatly-increase-biodiversity/" target="_blank" rel="noreferrer noopener">various habitats</a>.



Why does this matter? Well, imagine a sprawling landscape as a complex jigsaw puzzle. Each distinct habitat - whether woodland, farmland, or urban area - represents a unique piece of this puzzle. 



According to the research, fitting together different habitat "pieces" leads to a more complete, richer, and vibrant picture of biodiversity.



<h2 class="wp-block-heading" id="h-landscapes-and-habitats">Landscapes and habitats</h2>



Study lead author Dr. Talya Hackett is an alumnus of Bristol's School of Biological Sciences who is currently affiliated with the <a href="https://www.ox.ac.uk" target="_blank" rel="noreferrer noopener">University of Oxford</a>. 



"Conservation and <a href="https://www.earth.com/news/world-environment-day-2024-a-call-for-land-restoration/" target="_blank" rel="noreferrer noopener">restoration projects</a> are increasingly focusing on landscape-scale efforts. Yet, data on species interactions are often limited to specific habitats, such as woodlands, farmland, or urban areas," said Dr. Hackett.



<h2 class="wp-block-heading" id="h-ecological-balance-of-multi-habitat-landscapes">Ecological balance of multi-habitat landscapes</h2>



The researchers unearthed significant differences in food web structures among landscapes containing one, two, or three habitats. 



The multi-habitat landscapes hosted a greater number of species and displayed an evenly distributed abundance. The diversity was not just in numbers but also in species type, with unique habitat specialists rounding off the mix.



The research offers a fresh perspective on ecosystem stability. The "multi-habitat landscape model" demonstrates an enhanced resistance to species loss. Think of it as a safety net for biodiversity.



Lose a species in one habitat, and another from a <a href="https://www.earth.com/news/how-will-changing-tundra-landscapes-affect-earths-climate/" target="_blank" rel="noreferrer noopener">different habitat steps</a> in to balance the scales.



<h2 class="wp-block-heading" id="h-significance-of-multi-habitat-landscapes">Significance of multi-habitat landscapes</h2>



Elaborating on this fascinating concept, co-lead author Professor Jane Memmott explained that landscapes are more than just a sum of their individual habitats.



They present unique properties, such as increased resilience against species loss and improved pollination, transcending their components' individual capabilities.



Taking a detour from traditional conservation strategies, the study emphasizes the importance of maintaining multi-habitat landscapes.



Our natural environments are a vibrant interplay of unique habitats that are all interconnected. It's like a relay race where each habitat passes the baton to the next, facilitating a seamless flow of life and energy.



<h2 class="wp-block-heading" id="h-comprehensive-approach-to-conservation">Comprehensive approach to conservation</h2>



Study co-author Dr. Alix Sauve noted that understanding the symbiotic relationships between habitats is key when planning new nature reserves.



Dr. Suave suggests that the landscape context of potential sites should be considered to maximize ecosystem function and long-term stability.



The study examined over 11,000 species interactions. Wild strawberries served as the "test plant" for assessing pollination efficiency within different landscapes. The results confirmed that <a href="https://www.earth.com/news/plant-diseases-flourish-in-city-landscapes/" target="_blank" rel="noreferrer noopener">habitat diversity</a> positively impacts pollination.



<h2 class="wp-block-heading" id="h-what-s-on-the-horizon">What's on the horizon?</h2>



The study has opened a Pandora's box of exciting research opportunities. The team plans to delve into investigating the effects of specific habitat combinations and their compatibility. 



Moreover, future studies might also explore other ecological functions such as seed dispersal and decomposition in multi-habitat landscapes.



This has considerable implications for agricultural practices too. It could enhance food production, pest control, and overall ecosystem health. Ultimately, the research highlights the interconnected nature of ecosystems at the landscape scale.



"Mobile species effectively glue the various habitats together, underscoring the intricate connections that sustain biodiversity and ecosystem services," said Professor Memmott.



<h2 class="wp-block-heading" id="h-significance-of-the-study">Significance of the study</h2>



To preserve our natural world in all its splendid diversity, we need to shift our focus from individual habitats to a multi-habitat landscape approach. 



Our role in nature's symphony is to maintain the harmony between different habitats to ensure the melody of biodiversity continues to play.



Just like how a landscape is a mosaic of habitats, the future of conservation management lies in embracing this multi-faceted approach. 



The study is published in the journal <a href="https://www.nature.com/articles/s41586-024-07825-y" target="_blank" rel="noreferrer noopener">Nature</a>.



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Landscapes with a mix of habitats are biodiversity hotspots

Ever notice how nature doesn't stick to a single "theme"? Fields of wildflowers seamlessly transition into hardy shrubs, which give way to towering trees as you venture deeper into a landscape. This is not just coincidence. A recent study has brought to light nature's ingenious plan behind this apparent randomness in landscapes and habitats. Different habitats, different stories A study conducted across 30 field sites in the UK has revealed the magic behind mother nature’s multi-faceted design. The research was led by a team of ecologists at...

When you think about areas that experience seismic activity, you might think <a href="https://www.earth.com/news/earthquakes-yellowstone-supervolcano/">Yellowstone National Park</a>, San Francisco and coastal cities along the Pacific Ring of Fire.

What probably won’t come to mind is New York City, but seismologists have warned that the city is overdue for a 5.0 magnitude earthquake or higher.

The reasoning behind this claim has to with the city’s history of earthquakes and its many fault lines.

Earthquakes on the east coast, while rarely big enough to be felt or cause damage, do occur. In 2011, a 5.8 earthquake struck near Virginia but could be felt strongly in Manhattan.

More recently, in late November of 2017, an earthquake near Delaware caused some tremors in the New York area.

Faraz Toor, an associate producer and writer for <a href="http://www.ny1.com/nyc/all-boroughs/news/2018/04/01/new-york-city-is-due-for-magnitude-5-or-stronger-earthquake">NY1</a>, recently reported a thorough investigation into New York’s moderate earthquake risk.

“While New York is at moderate risk for earthquakes, its high population and infrastructure could lead to significant damage when a magnitude 5 quake or stronger hits the area,” said Toor.

Although even residents may not be aware, there are actually quite a few fault lines in New York City.

According to the <a href="https://www.usgs.gov/">United States Geological Survey</a> (USGS), faults of every size can be found on all continents, but their risk of seismic activity varies depending on the geological conditions and how active different regions are.

Toor points to several notable faults in New York City, including the 125th Street Fault, the Dyckman Street Fault, the Mosholu Parkway Fault, and the East River Fault.

The 125th Street Fault runs all the way into East River from New Jersey.

Even though these faults don’t carry the same risks as other well known and heavily monitored seismic zones, there is a chance of an earthquake causing substantial damage in New York City in the near future.

By looking at the city’s past earthquakes, experts point to the likelihood of 5.0 or greater hitting the city soon. The last known earthquakes that were 5.0 or greater occurred in 1737 and 1884.

“Researchers say New York City is susceptible to at least a magnitude 5 earthquake once every 100 years, a 6 about every 670 years, and 7 about every 3,400 years,” writes Toor. “It's been 134 years since New York was last hit by at least a magnitude 5. When it happens next, researchers say it won't be much like 1884.” 

The damage caused by an earthquake today would be far more significant due to the city’s infrastructure and high population. More buildings equal a greater risk of damage, and if a major quake were to strike it could cost the city billions of dollars. 

--

By <a href="mailto:kayvandette@gmail.com">Kay Vandette</a>, <a href="https://www.earth.com/">Earth.com</a> Staff Writer

Is New York City overdue for a big earthquake?

When you think about areas that experience seismic activity, you...

Hybrid and electric cars have slowly become more and more mainstream, and it’s been <a href="https://about.bnef.com/electric-vehicle-outlook/">estimated</a> that by 2040, electric cars will make up over half of all new car sales. 

A big part of the push toward electric and hybrid vehicles is the falling costs of lithium batteries. As a result, more and more companies are backing projects to put electric and zero-emission commercial planes in the air as soon as the early 2020s. 

Now, according to a new <a href="https://www.nbcnews.com/mach/science/electric-planes-promise-big-benefits-air-passengers-planet-ncna862001">NBC News</a> report, electric planes could offer a quieter and more comfortable flight while emitting less pollution.

According to the <a href="https://www.epa.gov/regulations-emissions-vehicles-and-engines/regulations-greenhouse-gas-emissions-aircraft">Environmental Protection Agency</a> (EPA), aircrafts account for 12 percent of all transportation <a href="https://www.earth.com/news/capture-conversion-carbon-emissions/">carbon emissions</a> and 3 percent of the United States’ entire annual greenhouse gas emissions. 

While they may not replace major jet airliners for long transatlantic flights, electric “air taxis” could be the best option for short trips. 

“They’ll be much quieter for passengers and people who live near airports, and their computer-controlled, electrically driven propellers will make for smoother, more comfortable flights,” reports NBC MACH journalist Tom Metcalfe. 

Electric planes could also be much cheaper than traditional flights because of the high cost of jet fuel. They’ll be cost effective, not only for passengers but for airline companies as well, as they have the capability of being remotely controlled in certain situations.

New startups and investments in electric planes have been popping up, with several companies working on designs and planes that could be in operation in the coming decade. 

According to the NBC report, these new planes include a 19-seat hybrid commuter plane being developed<a href="http://zunum.aero/"> Zunum Aero</a> which is backed by Boeing. The company <a href="http://www.airbus.com/">Airbus </a>is also working on a small craft that could take flight by the 2020s and another 100 seat aircraft down the line.

In addition, the Israeli startup <a href="https://www.eviation.co/">Eviation</a> will have its first electric plane “Alice” in the air by 2021. 

“We're harvesting the same kind of beautiful stability that you see in a drone flight, controlling it roughly 400 times a second, in the cruise,” Eviation CEO Omer Bar-Yohay told NBC. 

We might be a long way off from the Jetsons’ picture of the future complete with flying cars, but these hybrid and electric air taxis are an exciting new innovation with the potential to mitigate climate change and reduce our carbon footprints. 

--

By <a href="mailto:kayvandette@gmail.com">Kay Vandette,</a> <a href="https://www.earth.com/">Earth.com</a> Staff Writer

Image Credit: Eviation

Electric planes could offer smoother flights and zero emissions

Hybrid and electric cars have slowly become more and more...

Researchers at the <a href="http://web.mit.edu/">Massachusetts Institute of Technology</a> (MIT) have led a widespread investigation into the effectiveness of carbon pricing, where a tax or fee would be charged for carbon emissions. Across almost a dozen separate studies, all of the experts found that taxing carbon could not only be an effective way of reducing <a href="https://www.earth.com/news/smartphones-drive-carbon-emissions/">carbon dioxide</a> (CO2) emissions but could also provide a fair method of boosting the economy.

The extensive research was conducted by 11 different institutions, including the <a href="https://www.nrel.gov/">National Renewable Energy Laboratory</a> (NREL), using a common set of starting assumptions to evaluate the outcome of various carbon tax proposals. The researchers also used sophisticated modeling tools for their analyses.

John Reilly is the co-director of the MIT Joint Program on the Science and Policy of Global Change and a senior lecturer at the Sloan School of Management. He explained that all of the teams evaluated the same options for pricing carbon emissions and for using the subsequent revenue. 

The researchers considered pricing carbon at $25 or $50 per ton of emissions with two different rates of increase: 1 percent or 5 percent per year. They also accounted for three different methods of distributing the revenue including an equal rebate to every household, a tax break for individuals, or a corporate tax break.

According to Reilly, even the lowest tax rates could lead to reductions in CO2 emissions sufficient enough to meet the standards set by the 2015 Paris Agreement.


The experts also found that the most efficient way of using the revenue would be for corporate tax breaks, which have been found to boost economic growth more than the other options. However, the benefits of corporate tax breaks would fall disproportionately on lower-income households.

The option of sending equal rebates to all households was found to be the least effective strategy for boosting the economy, but also the least regressive.

The researchers agreed on another scenario which combines corporate tax breaks and rebates for some low-income families. They found that this strategy could eliminate the unfair aspects of the tax with almost the same efficiency in reducing CO2 emissions.


The findings of the research indicate that starting with a $50 per ton carbon tax and increasing it by 5 percent per year would lead to a 63 percent reduction in overall greenhouse gas emissions by the year 2050. 

“So that's in line with what people are talking about, which is needing a 50 percent reduction by 2050, globally, and getting to net zero beyond that,” said Reilly.

An overview of all 11 studies is published in the journal <a href="https://www.worldscientific.com/worldscinet/cce">Climate Change Economics</a>.

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Charging a tax or fee on carbon could be effective in the U.S.

Researchers at the Massachusetts Institute of Technology (MIT) have led...

It turns out that <a href="https://www.earth.com/news/queen-bees-secret-ingredient/">bees</a> aren’t the only crucial players when it comes to plant pollination, as several different vertebrates are also an important part of the process.

Mice, birds, bats, and lemurs are all pollinators, and some have even developed complex relationships with certain plants aiding in reproduction. 

In a new study, researchers from the <a href="https://www.southampton.ac.uk/">University of Southampton</a> and the <a href="https://www.cam.ac.uk/">University of Cambridge</a> reviewed different exclusion experiments in order to determine the importance of vertebrates to pollination. 

The findings were published in the Ecological Society of America's journal Frontiers in Ecology and the Environment.

With plants that have help from pollinating vertebrates, fruit and seed production drops 63 percent when only insects are allowed access to the plant. 

The researchers reviewed 126 similar exclusion experiments and studies that dealt with vertebrate pollination.

According to the research, vertebrates provide certain benefits and services that honeybees and insect vertebrates simply can’t.

Bat exclusion experiments showed a loss of fruit production by 83 percent, which means that bats are important to many plants’ reproductive cycles. 

Bats are known to pollinate 528 plant species around the world, and some plants like the blue agave rely on greater and lesser long-nosed bats exclusively for transporting pollen. 

Birds are also big pollinators, with over 920 bird species responsible for pollinating 5 percent of plant species in most regions. On islands that number can be as high as 10 percent. Even lizards can be pollinators in some parts of the world.

Tropical areas also had a higher percent loss in fruit and seed production when vertebrates were purposefully kept away from plants. 

The researchers say that the reason for the higher dependence on vertebrates in tropical areas has to do with more specialized codependent relationships, like the ones between bats and the agave plant. 

The researchers note that their findings should be used when examining management and conservation efforts in order to protect pollinators. If vertebrate pollinators suffer major population declines, as previous research has shown, so will key pollen-producing plants. 

--

By <a href="mailto:kayvandette@gmail.com">Kay Vandette</a>, <a href="https://www.earth.com/">Earth.com</a> Staff Writer 

Image Credit: Petra Wester

Mice, birds, and bats also play important roles in pollination

It turns out that bees aren’t the only crucial players...

It has been known for years now that climate change and the resulting warming of the ocean has led to <a href="https://www.earth.com/news/mass-coral-bleaching-common/">coral bleaching</a> in many of our oceans’ reefs. Coral bleaching occurs when the water is too warm, causing corals to expel the algae living in their tissues, turning the coral completely white. While this does not kill the coral, they do become more stressed and have an increased risk of mortality. 

New research from the <a href="https://www.coralcoe.org.au/">ARC Centre of Excellence for Coral Reef Studies</a> at James Cook University and <a href="http://www.lancaster.ac.uk/">Lancaster University</a> has found that coral bleaching events not only change the vibrant coral landscape of a reef, they can also decrease the variety of fish living in these ecosystems.

“The widespread impacts of heat stress on corals have been the subject of much discussion both within and outside the research community,” says Laura Richardson, a PhD student at James Cook University and lead author of the study. “We are learning that some corals are more sensitive to heat-stress than others, but reef fishes also vary in their response to these disturbances.”

Researchers examined 16 reefs off Lizard Island in the northern region of the Great Barrier Reef – one of the most important and unique ecosystems on the planet. They surveyed the quantity and species of coral and fish before, during, and after a mass bleaching event in 2016 that was caused by a global heat wave.

“Prior to the 2016 mass bleaching event, we observed significant variation in the number of fish species, total fish abundance and functional diversity among different fish communities,” explains co-author Andrew Hoey of James Cook University. “Six months after the bleaching event, however, this variation was almost entirely lost.”

Coral bleaching can affect some species of fish more than others. After the bleaching event, the researchers noticed a significant decline in the diversity of fish communities. Fish that were more dependent on branching corals – such as butterfly fish – were the most affected. 

Losing species diversity in these sensitive ecosystems is a pressing issue. The abundance of species and variation throughout different fish communities are major characteristics of diverse ecosystems such as the Great Barrier Reef. If we’re unable to slow down or reverse climate change, we may lose these ecosystems – and some of their inhabitants – forever.

--

By <a href="mailto:certz@earth.com">Connor Ertz</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Image Credit: ARC CoE for Coral Reef Studies/ Ciemon Caballes

Coral bleaching decreases fish diversity in Great Barrier Reef

It has been known for years now that climate change...

For decades, scientists have been trying to solve the “case of the missing nitrogen,” as we’ve known that more nitrogen accumulates in soil and plants than can be explained by atmospheric nitrogen alone. But the source of this additional nitrogen has eluded them… until now. A new study published in the journal <a href="http://www.sciencemag.org/">Science</a> has found that as much as 26 percent of nitrogen in global ecosystems is sourced from rocks – with the remaining portion coming from the atmosphere.

“Our study shows that nitrogen weathering is a globally significant source of nutrition to soils and ecosystems worldwide,” says co-lead author Ben Houlton, a professor at the <a href="https://www.ucdavis.edu/">University of California, Davis</a>. “This runs counter the centuries-long paradigm that has laid the foundation for the environmental sciences. We think that this nitrogen may allow forests and grasslands to sequester more fossil fuel CO2 emissions than previously thought.”

Nitrogen is a vital component of the Earth’s ecosystems for many reasons, one of them being that it absorbs carbon dioxide pollution, and there is a limited amount of this element available from plants and soils. The study found that rock nitrogen availability – which is determined by weathering – varies across certain regions and landscapes. Mountainous areas like the Andes and Himalayas are believed to be major sources of rock nitrogen weathering, as do grasslands, deserts and woodlands. 

With these new findings, mapping nutrient profiles in rocks for their potential for <a href="https://www.earth.com/news/capture-conversion-carbon-emissions/">carbon</a> uptake could be an important effort for conservation considerations, as areas with more rock nitrogen weathering could be able to sequester more carbon.

“Geology might have a huge control over which systems can take up carbon dioxide and which ones don’t,” says Houlton. “When thinking about carbon sequestration, the geology of the planet can help guide our decisions about what we’re conserving.”

Although this study does not have any immediate implications for farmers and gardeners – both of whom rely heavily on nitrogen to grow food – it could have major implications for how we project for climate change, as those models rely on the carbon cycle. In the meantime, the discovery that as much as one-quarter of an ecosystem’s nitrogen can come from bedrock will be having textbook editors scramble to rewrite our centuries-old understanding of our planet’s nitrogen availability. 

--

By <a href="mailto:certz@earth.com">Connor Ertz</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Image Credit: Paul White, FLICKR

Source of Earth’s nitrogen supply could help store carbon

For decades, scientists have been trying to solve the “case...

Scientists are reporting that the number of plant species that reside on mountaintops in Europe has increased very rapidly due to <a href="https://www.earth.com/news/limit-global-warming/">global warming</a>. In the last decade, five times more species have expanded up to European mountaintops compared to the late 1950s and early 1960s.

An international research team focused its study on the number of plant species on 302 European mountain peaks over the past 150 years. The experts found that the increase in plant species, which is accelerating more every year, is undoubtedly linked to rising temperatures.

According to the study, the number of species on each of the mountain peaks increased by an average of 1.1 species from 1957 to 1966. Fifty years later, from 2007 to 2016, the average increase jumped up to 5.5 new species across the 302 mountaintops.

At this point, the researchers have only accounted for new plant species that have already moved up to the top of the mountains. They have not yet been able to examine the number of species that are currently spreading upwards.


It is also not yet known how the expansion of new plant species may have displaced other species that have survived on these extreme mountain peaks for centuries, but there is evidence that this will happen in the future if it is not already occurring.

“Some of the species which have adapted to the cold and rocky conditions on mountain summits will probably disappear in the long term,” explained lead author Manuel Steinbauer.

“They have nowhere else to go, and they can't develop rapidly enough to be able to compete with the new arrivals, which are taller and more competitive under warmer climates.”

While it is likely that new species will out-compete highly-specialized species on mountain summits, the subject remains up for debate at this point.

“The species that move upwards, often come from grassland above the treeline,” explained Steinbauer. “But they can't survive everywhere on the mountain top, so it's not certain that they will be a threat to all the existing species up there. The local soil conditions and micro-climates also play a role.”

Study co-author Jens-Christian Svenning is a professor in the Department of Bioscience at <a href="http://www.au.dk/en/">Aarhus University</a>.

“Even though the existing species on mountain tops are not acutely endangered, the strong acceleration in the effects of global warming on plant communities on the peaks does give cause for concern, as we expect far stronger climate change toward 2100,” said Professor Svenning.


The study is published in the journal <a href="https://www.nature.com/">Nature</a>.

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Image Credit: Hansueli Rhyner, SLF, Switzerland

Rising temperatures bring new plant species to mountaintops

Scientists are reporting that the number of plant species that...

Solar power is quickly becoming a dominant energy source, rising above all other renewables, nuclear, and fossil fuel energy combined in global investments in 2017. 

A new report recently released by the <a href="http://fs-unep-centre.org/">UN Environment, Frankfurt School - UNEP Collaborating Centre</a> and<a href="https://about.bnef.com/"> Bloomberg New Energy Finance</a> examined the major trends in solar investments through the year. 

The findings show that <a href="https://www.earth.com/news/saudi-arabia-solar-power-plant/">solar</a> dominated global investments and, although a long way off from supplying enough energy to power all the world’s grids, has significant potential for both economic and environmental sustainability. 

“The extraordinary surge in solar investment shows how the global energy map is changing and, more importantly, what the economic benefits are of such a shift,” said Erik Solheim, the head of UN Environment. “Investments in renewables bring more people into the economy, they deliver more jobs, better quality jobs, and better-paid jobs. Clean energy also means less pollution, which means healthier, happier development.”

98 new gigawatts of new solar power projects were installed around the world in 2017, which was more than any other power generating technology including other renewables. 

Investments in solar power also increased by 18 percent at 160.8 billion, and solar power investments made up more than half of all renewables investments in 2017 (excluding large hydro). 

One of the report’s key findings was that China was the leading location for renewables, as 53 gigawatts were added in the country. This accounts for 45 percent of the global total of added solar projects worldwide. 

Australia, Mexico, and Sweden were also listed in the report with increased investments in solar power throughout the year. 

Conversely, investments in the United States and Europe declined. 

“In countries that saw lower investment, it generally reflected a mixture of changes in policy support, the timing of large project financings, such as in offshore wind, and lower capital costs per megawatt,” said Angus McCrone, the lead author of the report. 

Overall though, solar investments rose considerably and 2017 marked the eighth year in a row where global investments in renewables exceeded $200 billion. 

The surge in renewables is especially good news for combating climate change and carbon emissions. The amount of electricity generated by renewables currently, according to the report, avoids 1.8 gigatonnes of carbon emissions. 

--

By <a href="mailto:kayvandette@gmail.com">Kay Vandette</a>,<a href="https://www.earth.com/"> Earth.com</a> Staff Writer

Solar power dominated global investments in 2017

Solar power is quickly becoming a dominant energy source, rising...

“I went to the woods because I wished to live deliberately...” - Walden, Henry David Thoreau

Walden Pond is most famously known as the setting of Henry David Thoreau’s Walden, which details his two years of life in the woods near the lake in Concord, Massachusetts. As a naturist, Thoreau’s writings encompass the ideals of nature and simple living. 

The pond has been a popular tourist and recreational destination since the early 20th century. 

However, after years of human activity, climate change, and pollution, the Walden Pond of today is different from the iconic, idealistic setting Thoreau praised in his works. 

Researchers from <a href="http://www.paulsmiths.edu/">Paul Smith's College</a> conducted a study that examined the ecology, water quality and ecosystem of Walden Pond to better understand how its popularity as a recreational destination affected the area. The study was published in the open access journal <a href="http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0191755">PLOS ONE</a>. 

The results show that increased human activity and <a href="https://www.earth.com/news/sahara-desert-getting-bigger/">climate change</a> over the past 1,800 years have significantly altered the ecology of the lake. 

The researchers collected six sediment cores from the bottom of the lake in order to better understand the long-term impact that human activity has had on the ecosystem of Walden Pond. 

Radio-isotopic dating was used to help date the core samples, and glassy-shelled algae preserved in the layers of sediment through the years revealed water clarity and depth at the time the algae were alive. 

After analyzing the sediment data, the researchers discovered that phytoplankton levels increased after the 1920s, directly correlating with the early development of the shoreline. 

Sediment runoff disturbed by human activity and waste and pollution from swimmers likely created an influx of nutrients which then increased phytoplankton populations in the lake. 

Water clarity has declined over the years, and according researchers, will only get worse due to climate change in the future. 

The study shows the long-term impact that human activity can have on popular recreational destinations, and emphasizes the important role that climate change will continue to have on the lake’s ecosystem. 

“The sediments of Walden Pond record major ecological changes to this iconic lake since the time of Thoreau,” said Curt Stager, the study’s lead author. “They also warn of more changes to come in a warming future.”

--

By <a href="mailto:kayvandette@gmail.com">Kay Vandette</a>,<a href="https://www.earth.com/"> Earth.com</a> Staff Writer 

Image Credit: Curt Stager

Human activity, climate change have altered Walden Pond

“I went to the woods because I wished to live...

Saudi Arabia has announced that it will build a massive solar power plant with a capacity of 200 gigawatts. The project, which was announced last week in New York, is 200 times bigger than any solar farm that is now operating and is reportedly 100 times bigger than any <a href="https://www.earth.com/news/wind-solar-power-supply/">solar project</a> currently planned.

Backed by the Japanese tech investor <a href="https://www.softbank.jp/en/">Softbank</a>, the initiative will require a $200 billion dollar investment in order to be completed by 2030. The solar farm would nearly triple the current solar generation capacity of Saudi Arabia, which is currently at 77 gigawatts.

Saudi Arabia's Crown Prince Mohammed bin Salman is also backing the project, as part of his strategic plan to modernize the country’s economy, <a href="http://vision2030.gov.sa/en">Vision 2030</a>. The Prince has stated that he strives to free his country from its dependency on oil. 

A power station of this magnitude would not only help to facilitate Saudi Arabia’s transition from oil-fired power plants to renewable energy, but would also create an excess of oil that could be sold to other countries - resulting in billions of dollars of revenue.

In addition, the power plant would create tens of thousands of jobs, further boosting the economy.

“It’s a huge step in human history,” said Prince Mohammed bin Salman. “It’s bold, risky, and we hope we succeed in doing that.”

According to <a href="https://qz.com/">Quartz</a>, the solar farm would cover an estimated 5,000 square kilometers if completed, which is an area larger than any of the world's most sprawling cities. The news outlet derived this estimate by calculating the size of one of the world’s largest solar power plants in India, which covers about 24 square kilometers.
--
By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Saudi Arabia announces plans for enormous solar power plant

Saudi Arabia has announced that it will build a massive...

<a href="https://www.earth.com/news/bottled-water-contaminated-microplastics/">Microplastics</a> are tiny specs of plastics, fibers, and microbeads that are the most <a href="https://oceanservice.noaa.gov/facts/microplastics.html">abundant</a> type of debris found in the world’s oceans and lakes. 

According to one <a href="http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0111913">recent study</a>, there are over 5 trillion pieces of plastics floating in the oceans, but researchers have since suggested that number is a deep underestimation. 

Because of their tiny size, these microplastic particles (MPPs) wreak havoc on the food chain in marine and freshwater ecosystems. 

Much attention has been given to the presence of MPPs in the oceans, but now new research shows that organic fertilizers may also contain a worrying amount of microplastics. 

The study was conducted by researchers from the <a href="https://www.uni-bayreuth.de/en/">University of Bayreuth</a>, Germany who tested several types of organic fertilizers from biowaste fermentation. 

Previously considered environmentally friendly, the study shows that organic fertilizers act as vehicles for microplastics to enter the soil. 

The researchers screened different organic fertilizers produced at recycled biowaste plants, specifically looking for MPPs greater than one millimeter in size. 

Fertilizers made from composting plants (from processed household biowaste) and digester plants (which creates biogas from manure) were both used in the study. 

All the fertilizer samples had microplastic particles between two and five millimeters in size. The amount differed depending on how the organic fertilizers were treated and the plant type used. Digester plants produced the largest amount of MPPs in fertilizers. 

The study shows that microplastics should be a concern not just in terms of the world’s water systems, but also its terrestrial environment. 

According to the researchers, the results call for further studies into the environmental impacts of MPPs in fertilizers.

--

By <a href="mailto:kayvandette@gmail.com">Kay Vandette</a>, <a href="https://www.earth.com/">Earth.com</a> Staff Writer

Organic fertilizers contributing to microplastic pollution

Microplastics are tiny specs of plastics, fibers, and microbeads that...

A new study led by the <a href="http://www.whoi.edu/">Woods Hole Oceanographic Institution</a> (WHOI) has revealed the flood history of the <a href="https://www.earth.com/news/freshwater-streams-polluted-salt/">Mississippi River</a> over the last 500 years. The researchers found a drastic increase in the size and frequency of extreme floods in the past century, primarily due to levee system construction.


The experts also linked flooding in the Mississippi with the natural shift of water flow and temperatures in the Pacific and Atlantic Oceans.

The newly-established record of flooding in the Mississippi River, which is the very first of its scope, highlights the fact that river engineering has intensified flooding to unprecedented levels in recent years.

“The floods that we've had over the last century are bigger than anything we've seen in the last 500 years,” said lead author Sam Muñoz. 

The study revealed that, in the past 150 years, the severity of a 100-year flood has increased by 20 percent. A flood of this magnitude only has a 1 percent chance of occurring in any given year.

“There's been a longstanding question about the extent to which all the changes we have made to the Mississippi River - one of the most engineered rivers in the world -have altered the probability of really large floods,” said Muñoz.


According to the research, at least 75 percent of the elevated flood risk can be directly attributed to human modifications of the river.

The experts also noted that when El Nino brings more storms and rainfall to North America, the ground surrounding the Mississippi River becomes unusually saturated. If extreme rainfall is also triggered by oscillation in the Atlantic Ocean, flooding is very likely.


“We're able for the first time to really parse out how the natural variability of the climate system influences flooding, and then how people have modified that,” said Muñoz.

The team plans to extend the flood record even further back in time to understand what drives flooding in other major river systems across the globe.


The study is published in the journal <a href="https://www.nature.com/">Nature</a>.

--

By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Human changes to Mississippi River have increased risk of floods

A new study led by the Woods Hole Oceanographic Institution...

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Today’s Video of the Day from <a href="https://www.igb.illinois.edu/">Carl R. Woese Institute for Genomic Biology</a> reveals how scientists can modify common crops like soybean, rice, and wheat to protect them from heat stress.



“We need to double crop production by 2050 to feed a growing global population, and not only are we not on track to do that, but climate change is further complicating things,” said Amanda Cavanagh, a lecturer at the University of Essex. 



The study is part of Realizing Increased Photosynthetic Efficiency (RIPE), an international research project that aims to develop food crops that turn the sun’s energy into food more efficiently.



“Using an engineering approach we designed multiple alternative metabolic pathways to photorespiration. Testing them in the field showed increases in productivity which led Amanda to significantly move the project forward by showing our engineered plants can withstand pretty extreme temperature stress,” said study co-author and RIPE researcher Paul South.&nbsp;



“As the climate changes and temperature stresses increase the pressure on our global food supply, farmers will need every tool available including engineering approaches like the synthetic biology used here to maintain safe and productive harvests.”



The experts tested plants modified to have more efficient photorespiration to see if they were better adapted to warmer temperatures.&nbsp;



The team found that the engineered plants produced 26 percent more biomass than the wild-type plants exposed to the same temperatures, and had 15 percent less yield loss under the higher temperatures.



Video Credit: Amanda Nguyen/University of Illinois



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



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Designing crops that can beat the heat

[sendtonews key="QGPzYnXEtN-1712599-12187" type="single"] Today’s Video of the Day from Carl...

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Today's Video of the Day from <a href="https://www.nasa.gov/goddard">NASA Goddard</a> describes the first comprehensive estimate of carbon density in the Saharan, Sahel, and Sudanian zones of Africa. In an effort to measure the amount of carbon stored across these drylands, a team of scientists used high-resolution satellite images and artificial intelligence to map nearly 10 billion individual trees. 



"The high spatial resolution (50 cm) combined with AI and field measurements used in this study is key to improving tree inventories in drylands," said Pierre Hiernaux, a French researcher working for NASA. "The ever-increasing availability of very high-resolution satellite imagery will make it possible to assess carbon pools and their dynamics at the individual tree level on a global scale."



"This study is exceptional because it is pioneering a type of approach that will revolutionize the monitoring of trees and forests on a global scale: in the short term, it will be possible to map the world's trees from the centre of the Amazon to our schoolyards," said <a href="https://www.inrae.fr/en">INRAE</a> researcher Jean-Pierre Wigneron.



"Many fields of application will become much more efficient and accurate, such as tracking carbon stocks, biodiversity, monitoring logging and protection against illegal forest degradation, in near real time.”



Video Credit: NASA Goddard&nbsp;



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Remote sensing will revolutionize the way we monitor trees

[sendtonews key="EjmSP20gQK-2593093-12187" type="single"] Today's Video of the Day from NASA...

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Lesotho: Africa's "Kingdom in the Sky" Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features northwest Lesotho in South Africa.



According to ESA, Lesotho is the only nation in the world that lies completely above 1,000 m in elevation. The country is famous for its tall mountains and narrow valleys, and is known as Africa's "Kingdom in the Sky."



Out of a population of around two million people, about 80 percent live in rural areas. More than 75 percent of these people are engaged in <a href="https://www.earth.com/news/climate-change-will-have-a-global-impact-on-agriculture/">agriculture</a>, including rainfed cereal production and animal grazing.&nbsp;



ESA reports that the country’s agricultural system faces a growing number of issues, with climate-related vulnerabilities such as drought, floods and extreme temperatures occurring more frequently. 



Diamonds are amongst the minerals found in the mountains. Indeed, Lesotho can truly be called the Kingdom in the Sky. Beautiful, culturally rich, safe, affordable, and easily accessible from Durban and Johannesburg, mountainous Lesotho is a vastly underrated travel destination. the Kingdom of Lesotho (Sotho: 'Muso oa Lesotho) is an enclaved country in southern Africa. It is just over 30,000 km2 (11,583 sq mi) in size and has a population of around 2 million.



Video Credit: ESA&nbsp;&nbsp;



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer 



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Lesotho: Africa's "Kingdom in the Sky"

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Today's Video of the Day from <a href="https://www.nasa.gov/goddard">NASA Goddard</a> features a visual dataset of.methane emissions from wetlands across the globe. Atmospheric methane levels have reached record highs in recent years, and wetlands are a major source of these emissions.&nbsp;



"Methane is an important greenhouse gas that contributes substantially to global warming. On a molecule by molecule basis, methane is much more efficient at trapping heat than carbon dioxide, the main driver of warming," says NASA.



"Though human activities, including agriculture, oil and natural gas production and use, and waste disposal, collectively contribute the majority of methane to the atmosphere, about a third of total methane emissions comes from wetlands."&nbsp;



According to NASA, understanding methane emissions from wetlands and other natural sources is critically important for scientists and policymakers who are working to combat climate change by reducing emissions from human activities.



Video Credit: NASA Goddard



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Wetlands are a major source of methane emissions

[sendtonews key="f8fukm28Vz-2491833-12187" type="single"] Today's Video of the Day from NASA...

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Today’s Video of the Day from <a href="https://earthobservatory.nasa.gov/">NASA Earth Observatory</a> reveals the evolution of the Columbia Glacier in southeastern Alaska. Columbia is among the fastest shrinking glaciers in the world, and the video documents its rapid retreat over the years.&nbsp;



Columbia Glacier is a large, multi-branched calving glacier that flows out of the Chugach Mountains to the Prince William Sound.&nbsp;



According to USGS, Columbia had a long history of stability prior to 1980, with a length 41 miles, and small, short-lived advances or retreats.



In the years since 1980, however, satellite images have captured Columbia’s alarming retreat. By using false-color images, scientists can distinguish between snow and ice, open water, vegetation, and rocky debris on the glacier’s surface.



The series of false-color images featured in today's video were acquired over the span of 35 years. You can see that by 2021, the glacier’s main branch had retreated about 15 miles from its initial position.



The Columbia Glacier has also lost more than 50 percent of its volume, mostly due to calving. <a href="https://www.earth.com/video/nasa-reveals-3d-visual-of-an-atmospheric-river/">NASA</a> reports that while climate change likely started the retreat, mechanical processes kept the disintegration going.



The NASA images are provided by Jesse Allen, Robert Simmon, Joshua Stevens, and Lauren Dauphin using data from Landsat satellites, from the U.S. Geological Survey, and data from MODIS on NASA’s Terra satellite. The structure of Columbia’s moraine played a large role in the stability of the glacier before 1980. 



Like other tidewater glaciers, the Columbia built up a moraine over time, and the mixture of ice and rock functioned like a dam keeping out the sea. It was supported on one end by the shoreline and by the underwater terminal moraine at the other.



Video Credit: NASA Earth Observatory/&nbsp; NASA’s Scientific Visualization Studio



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

The rapid retreat of the Columbia Glacier

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Today's Video of the Day from <a href="https://www.nasa.gov/goddard">NASA Goddard</a> describes how record-breaking heat expressed itself around the world in 2022.



Scientists have determined that 2022 was the 5th warmest year since 1880. Furthermore, the last nine consecutive years have been the warmest on record.



From devastating floods and wildfires to natural disasters like Hurricane Ian, 2022 showed us yet again how a warming climate affects people across the globe.&nbsp;



"As we look back at 20:22 and years past, we see that each year we better understand the challenges we face and how important it is to meet them," says NASA.



Video/ Image Credit: NASA Goddard



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

2022 illustrated the consequences of a warming climate

[sendtonews key="3UUsNkFOuS-2487333-12187" type="single"] Today's Video of the Day from NASA...

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Satellites reveal how Earth's systems are interconnected Today’s Video of the Day from <a href="https://www.nasa.gov/goddard">NASA Goddard</a> describes Earth’s interconnected systems, and how this network is affected by rising temperatures.&nbsp;



During 2020, average global temperatures matched the hottest year on record. The hurricane season was also record-breaking, with many of the storms intensifying at extraordinary speeds. Hot water in the ocean is fuel for hurricanes. The satellite data shows that it's all one interconnected system showing how Satellites reveal how Earth's systems are interconnected.



According to NASA, dust swept up from Northern Africa plays a major role in the formation of hurricanes, and is also a key source of fertilization in the Amazon rainforest. As a result of<a href="https://www.earth.com/news/seagrass-wasting-disease-is-fueled-by-climate-change/"> climate</a> change, dust plumes are expected to decline, which will have an effect on vegetation far away.&nbsp;



Images from Earth-observing satellites show how the world’s plant life is affected by natural disasters, fires, and deforestation. Satellites also reveal how widespread changes in vegetation impact waterways,&nbsp; the climate, air quality. Satellites communicate by using radio waves to send signals to the antennas on the Earth. "Earth From Space" is a groundbreaking two-hour special that reveals a spectacular new space-based vision of our planet. 



Video Credit: NASA Goddard&nbsp;



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Satellites reveal how Earth's systems are interconnected

[sendtonews key="JbW4VsY53O-1632195-12187" type="single"] Satellites reveal how Earth's systems are interconnected...

Today’s Video of the Day from the <a href="https://welcome.miami.edu/">University of Miami</a> Rosenstiel School of Marine and Atmospheric Science explores how changes in water temperatures have affected tiger shark habitats and movements in the North Atlantic Ocean. The study reveals that rising temperatures have caused the sharks to shift toward the poles over the past 40 years.



“Tiger shark annual migrations have expanded poleward, paralleling rising water temperatures,” explained study lead author Neil Hammerschlag. “These results have consequences for tiger shark conservation, since shifts in their movements outside of marine protected areas may leave them more vulnerable to commercial fishing.”



The researchers analyzed nine years of tracking data from satellite-tagged tiger sharks, combined with four decades of conventional tag and recapture data provided by National Oceanic and Atmospheric Administration (NOAA) Cooperative Shark Tagging Program.



The experts found that during the last decade of record heat, for every one-degree Celsius increase in water temperatures, tiger sharks migrated further poleward by over 400 kilometers. They also migrated two weeks earlier than usual to waters off the northeastern coast of the United States.



“Given their role as apex predators, these changes to tiger shark movements may alter predator-prey interactions, leading to ecological imbalances, and more frequent encounters with humans,” concluded Professor Hammerschlag.



Video Credit: University of Miami Rosenstiel School of Marine and Atmospheric Science



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Tiger sharks are shifting poleward as temperatures rise

Today’s Video of the Day from the University of Miami...

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> is focused on the melt ponds that emerge during the spring and summer on the Greenland Ice Sheet, which is the largest ice mass in the northern hemisphere.



"Melt ponds are vast pools of open water that form on both sea ice and ice sheets and are visible as turquoise-blue pools of water in this Copernicus Sentinel-2 image," says ESA.



"When snow and ice melts atop glaciers, water flows in channels and streams and collects in depressions on the surface. These melt ponds can speed up the melting of the surrounding ice since they greatly reduce the ice’s ability to reflect sunlight."



"This can create a positive feedback where an increasing number of melt ponds absorb more heat which causes ice cover to melt even faster."



According to ESA, Greenland has been hit with a late-season heatwave that began in early September. This caused the type of melt event that usually occurs in the middle of summer.



"In a recent paper published in Nature Climate Change, scientists found that major sea-level rise from the melting of the Greenland ice cap is now ‘inevitable’ even if the burning of fossil fuels were to halt overnight," says ESA. "Using satellite observations of Greenland ice loss and ice cap from 2000 to 2019, the team found the losses will lead to a minimum rise of 27 cm regardless of climate change."



Video Credit: ESA&nbsp;



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Melt ponds on the Greenland Ice Sheet

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> describes how Earth is unique in our solar system for its ability to sustain liquid water on its surface. But now, the water cycle is shifting as the climate warms, and scientists must find ways to predict how these changes will affect water availability.



Overall, 96 percent of Earth's water is saltwater, and nearly all of freshwater is found in ice and groundwater. These sources of water are linked as it passes through solid, liquid and gas phases.



In a warmer climate, the water cycle will be transformed. It will be easier for water to evaporate and form clouds, and storms will become more frequent and intense. Some regions will get too much water, while others will be left without enough water. In addition, soil moisture will be lost - which threatens food security.



Scientists are using satellite data from over the last 40 years to track changes that are happening in the water cycle. This will ultimately help us prepare for extreme events and better manage our water resources, according to ESA.



Video Credit: ESA



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Tracking changes in Earth's water cycle

[sendtonews key="fxH3eJHEkQ-2010196-12187" type="single"] Today’s Video of the Day from the...

Saturn,-,High,Resolution,3d,Images,Presents,Planets,Of,The

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Today's Video of the Day from <a href="https://www.nasa.gov/goddard">NASA Goddard Space Flight Center</a> features images of Saturn from NASA’s Hubble Space Telescope. The photographs capture the start of the mysterious "spoke season" on Saturn - when unexplained features appear on its rings. 



According to NASA, both the cause of the spokes and their seasonal variability have yet to be fully explained by planetary scientists.



"Like Earth, Saturn is tilted on its axis and therefore has four seasons, though because of Saturn's much larger orbit, each season lasts approximately seven Earth years. Equinox occurs when the rings are tilted edge-on to the Sun," explains NASA.



"The spokes disappear when it is near summer or winter solstice on Saturn. (When the Sun appears to reach either its highest or lowest latitude in the northern or southern hemisphere of a planet.) As the autumnal equinox of Saturn's northern hemisphere on May 6, 2025, draws near, the spokes are expected to become increasingly prominent and observable."



Experts believe that the spokes may be a product of the planet's variable magnetic field. When magnetic fields interact with solar wind, an electrically charged environment is created. This phenomenon is visible on Earth as the northern lights.&nbsp;



"Scientists think that the smallest, dust-sized icy ring particles can become charged as well, which temporarily levitates those particles above the rest of the larger icy particles and boulders in the rings," says NASA.



The spokes were first observed in the early 1980s by NASA's Voyager mission. Depending on the angle of the rings, the spokes can appear dark or light.



"Thanks to Hubble's OPAL program, which is building an archive of data on the outer solar system planets, we will have longer dedicated time to study Saturn’s spokes this season than ever before," said NASA senior planetary scientist Amy Simon, head of the Hubble Outer Planet Atmospheres Legacy (OPAL) program.



"Despite years of excellent observations by the Cassini mission, the precise beginning and duration of the spoke season is still unpredictable, rather like predicting the first storm during hurricane season."



Video Credit: NASA Goddard&nbsp;



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Mysterious "spoke season" captured on Saturn

[sendtonews key="Ccjk8KEMzv-2550719-12187" type="single"] Today's Video of the Day from NASA...

Closeup,Of,Fresh,Green,The,Napier,Bush,Grass,As,Animal

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Today’s Video of the Day from <a href="http://www.ntu.edu.sg/">NTU Singapore</a> reveals that some plants can remove toxic heavy metals from soil.&nbsp;



The researchers analyzed samples of various tropical plant species to test for levels of heavy metals and metalloids. The study showed that there are existing plants with high levels of these contaminants, which means that these species are great candidates for drawing pollutants out of the soil.&nbsp;



Among the plants examined in the study, 12 species had accumulated several types of heavy metals and metalloids. These plants are widely available, including species that are native to Singapore.



“In a small nation like Singapore, land may be repurposed to support new development plans, so it is important that we have a green and sustainable way to remediate land that is contaminated," said Professor Lam Yeng Ming.



"We set out to uncover how to better make use of tropical plants to do phytoremediation and through advanced characterization techniques, we showed how some of these tropical plant species can be an environmentally friendly and literally a 'green' way to remove contaminants in soil."&nbsp;



"Phytoremediation also has benefits of cost effectiveness, simplicity of management, aesthetic advantages, and long-term applicability and sustainability. The strategy prevents erosion and metal leaching by stabilizing or accumulating heavy metals, so that helps reduce the risk of contaminant spread.”



Video Credit: NTU Singapore



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Plants help remove heavy metals from contaminated soil

[sendtonews key="6SdlLLbt0t-1988946-12187" type="single"] Today’s Video of the Day from NTU...

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Today’s Video of the Day from the <a href="https://www.acs.org/">American Chemical Society</a> describes why herbicides are not as effective in killing weeds anymore. In the 20th century, chemical companies developed thousands of herbicides. The most commonly used herbicide was glyphosate, which was introduced in 1974.



Over the past few decades, dozens of species of weeds have evolved resistance to glyphosate. Depending on the site of action, the part of the plant that an herbicide interacts with, weeds may even be resistant to herbicides that have not been developed yet.&nbsp;



With increasing resistance to glyphosate and other herbicides, weeds are - once again - becoming a major concern for farmers.&nbsp;



Video Credit: American Chemical Society&nbsp;



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Weeds are becoming increasingly resistant to herbicides

[sendtonews key="gRpsplpwpe-2251464-12187" type="single"] Today’s Video of the Day from the...

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Today’s Video of the Day from the <a href="https://www.jpl.nasa.gov/">NASA Jet Propulsion Laboratory</a> (JPL) describes a dust storm on Mars that was nearly twice the size of the United States. As the storm covered the southern hemisphere of the planet, some of NASA’s explorers had to delay their normal activities.



NASA’s Insight lander put itself in a "safe mode" for 11 days to conserve battery power because solar power was disrupted by the dust. The Ingenuity Mars Helicopter postponed flights until conditions improved.



"A fleet of NASA orbiters monitor Martian dust storms like this one and serve as lifelines to Earth by relaying data from the rovers and lander on the ground back to the team. This includes the Mars Reconnaissance Orbiter, MAVEN, and Odyssey," reports JPL.



"Dust storms like this recent one start close to the ground and are spread by wind as they rise – warming the cold Martian atmosphere."



The images in the video were captured by NASA’s Curiosity as the dust rolled in. A fleet of orbiters monitored the dust storm from above, relaying data from Mars’ explorers back to scientists on Earth.



Video &amp; Image Credit: NASA/JPL-Caltech/ASU/MSSS



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

NASA monitors giant dust storms on Mars

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Today's Video of the Day from the <a href="http://www.esa.int/">European Space Agency</a> features Qeshm Island in the Strait of Hormuz. This strait provides the only sea passage from the Persian Gulf to the open ocean.



Qeshm is separated from the Iranian coast by the Clarence Strait, also known as Khuran.&nbsp;The Hara Forest Protected Area is a network of shallow waterways and forest located between the island and the mainland. This protected region is home to sea turtles, snakes, and more than 150 species of migrating birds.



Qeshm is famous for its wide range of&nbsp;ecotourist&nbsp;attractions, such as the&nbsp;Hara marine forests. According to environmentalists, about 1.5 percent of the world birds and 25 percent of Iran's native <a href="https://www.earth.com/news/female-hummingbirds-avoid-sexual-harassment-by-looking-like-males/">birds</a> annually migrate to the forests, which are the first national geo park in Iran.



Tourists are also drawn to the island to see an age-old Portuguese&nbsp;fort, historic mosques, the&nbsp;Seyyed Mozaffar&nbsp;and&nbsp;Bibi Maryam&nbsp;shrines, and the "Valley of Stars."



The average temperature on the island is 81 degress and the region is often hot and humid. From June to August, the island is described as being oppressively hot. The ideal time to visit is during the winter season. 



Video Credit: ESA&nbsp;



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Qeshm Island in the Strait of Hormuz

[sendtonews key="sFFhiK9OOn-1720418-12187" type="single"] Today's Video of the Day from the...

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> features Inhambane Bay in southeast Mozambique.&nbsp;



"Inhambane Bay is a deep inlet into which the small Mutamba River flows," says ESA. "On one side of the bay lies the historical city of Inhambane, capital of the Inhambane Province, while the sister city of Maxixe, the economic capital of Inhambane, sits across from it. The province is the second largest grower of cashews, after Nampula, and it also produces coconut and citrus fruits."



The beaches of Barra and Tofo are popular with tourists. There are also coral reefs along the long coastline of Inhambane, making it an ideal destination for scuba diving and snorkeling.



"Mozambique’s extensive coastline heightens the country’s vulnerability to tropical cyclones that develop in the Indian Ocean as well as storm surge flooding," says ESA.



"More than half of the population lives in low lying coastal areas, putting communities at risk. Inhambane Bay was dangerously close to where Cyclone Idai made landfall in 2019 causing widespread destruction to the country."



Video/ Image Credit: ESA



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Inhambane Bay in southeast Mozambique

[sendtonews key="yPSXGZek1I-2312529-12187" type="single"] Today’s Video of the Day from the...

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency </a>&nbsp;features the Kangerlussuaq Glacier, one of the largest tidewater outlet glaciers in Greenland. The glacier is located on the east coast of the Greenland ice sheet.



As human-induced climate change continues to drive up temperatures, global ice loss is accelerating at an alarming rate. ESA reports that, over the past decade alone, 3.5 trillion tons of ice have melted from the Greenland ice sheet. This is enough to cover the UK with meltwater 15 meters deep.



Based on satellite imagery, researchers determined that Kangerlussuaq entered a new phase of rapid retreat and acceleration in 2017. In their study, published in <a href="https://www.frontiersin.org/articles/10.3389/feart.2019.00123/full">Frontiers in Earth Science</a>,&nbsp; the experts report that the glacier's ice front is now at its most retreated position since the early 20th century.



"Given Kangerlussuaq’s previous impacts on both the magnitude and pattern of ice sheet wide mass loss, we predict that its new phase of retreat, acceleration and thinning will markedly enhance the south-east region’s contribution to increasing discharge from the ice sheet," wrote the study authors.&nbsp;&nbsp;



"More broadly, accurate forecasting of the ice sheet’s contribution to sea level rise will require a deeper understanding of, and responses to, these non-linear ice dynamic processes."



Video Credit: ESA



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Kangerlussuaq Glacier on the Greenland ice sheet

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> describes the complex relationship between ocean and climate. ESA's Climate Change Initiative will help us understand how oceans influence the climate and how climate change is impacting the oceans.&nbsp;



"Earth’s oceans are huge heat stores, soaking up 93% of the excess heat from human activity over the past 70 years. Ocean currents redistribute heat around the planet, from the Equator to the poles. Where this ocean heat goes influences weather patterns and regional climate," explains ESA.



"As well as absorbing heat, oceans are a natural carbon sink, absorbing a quarter of carbon dioxide emissions from human activity. This has led to the acidification of ocean water, threating marine life."



The amount of heat and carbon dioxide soaked up by the ocean depends on specific variables, including phytoplankton, temperatures, waves, salinity, and ice cover. Satellites can be used to measure these variables from space.



"From their unique vantage point, satellites provide key information for understanding the complexities of our planet and monitoring environmental issues," says ESA.



Video Credit: ESA



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By <a href="mailto:csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Editor



Check us out on <a href="https://www.earth.com/earthsnap/">EarthSnap</a>, a free app brought to you by Eric Ralls and Earth.com.

Ocean heat influences regional climate

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Today’s Video of the Day from the <a href="https://www.esa.int/">European Space Agency</a> describes the importance of monitoring the shape of the sea surface, which is constantly changing. These observations have many applications, such as ship routing, <a href="https://www.earth.com/news/the-modem-ocean-is-a-tough-place-for-whales-to-survive/">ocean</a> current forecasting, and debris tracking.



"A project supported by the Discovery element of ESA’s Basic Activities recently investigated a new technique to measure sea surface topography very precisely," reports ESA.



"The technique involves looking at satellite navigation (GNSS) signals that have been reflected off of the sea surface at very low angles. At these so-called grazing angles, waves and surface roughness have very little impact on the reflection process; the sea surface acts as a very smooth mirror."



Estel Cardellach is the principal investigator at the Institute for Space Studies of Catalonia, who first submitted the idea for the project.



“In a mirror-like reflection the phase of the signal can be tracked – it is continuous," said Cardellach. "Different surface heights result in different phase measurements. It gives a very precise measurement of the surface altitude at a few centimetres’ precision.”



The researchers developed a GNSS receiver and set up an experiment in the Balaeric Islands to collect signals from the receiver that were reflected off the sea surface. Ultimately, these signals will provide improved measurements of the shape of the sea surface.



Image/ Video Credit: ESA



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By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Monitoring the dynamic shape of the sea surface

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Aerial,Photo,Of,River,In,Amazon,Rainforest,Jungle,In,Peru

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Today’s Video of the Day from <a href="https://www.nasa.gov/goddard">NASA’s Goddard Space Flight Center</a> describes how scientists are using autonomous sound sensors to monitor deforestation in the Amazon. By recording soundscapes, the experts can determine which animals are present through their distinct sounds.&nbsp;



Using this method, sounds can be used as scientific measurements to analyze the effects of deforestation. The researchers will gain a better understanding of how the acoustics of a forest can be used to measure its health.&nbsp;



"From space, parts of the Amazon rainforest that have previously been logged or burned may look lush and green, like a place buzzing with activity and full of sounds. But inside the rainforest, the animal life may tell a different story, of a harsh environment and a quieter soundscape," says NASA.



Video Credit: NASA’s Goddard Space Flight Center&nbsp;



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By <a href="http://csexton@earth.com">Chrissy Sexton</a>, <a href="https://www.earth.com/staff/">Earth.com</a> Staff Writer

Monitoring deforestation in the Amazon through sounds

[sendtonews key="u0TYxxqfF7-2186404-12187" type="single"] Today’s Video of the Day from NASA’s...