Sleep debt is the difference between the amount of time...

When most of us think of caves, we probably think...

Evolution is a treasure trove of wonder. It has led...

Just as biologists need to distinguish between different kinds of...

Ecosystem services are the direct and indirect ways that nature...

A nudibranch is a kind of sea slug. With over...

Frigid temperatures, dense coniferous forests, and cold winters are all...

Life on earth depends on photosynthesis. Most of the world’s...

Yeast may not be much to look at, but these...

Gymnosperms and angiosperms are two groups of plants that constitute...

The phylum Chordata belongs to the animal (or deuterostome) kingdom....