As our planet faces escalating challenges from global warming, a group of international scientists will be recruiting a surprising ally in the fight against greenhouse emissions: the cow.  At the University of Illinois Urbana-Champaign, experts in animal sciences are launching a novel venture aimed at cutting methane emissions due to rumen fermentation in beef and dairy cattle.  Greener cattle Spanning three years and backed by a $3.2-million budget, this undertaking falls under the umbrella of the Greener Cattle Initiative, which is backed by the Foundation for Food...