From lipstick to jet fuel, cows provide it all for humans. We checked with the National Cattleman's Beef Association to see what some of the most common, and surprising, products contain cow parts. 

A study led by environmental scientists at Rice University's George R. Brown School of Engineering puts numbers to the toll of reactive nitrogen species produced in America's croplands.

Russian influence has been gaining ground across Africa in recent years, placing the continent at the crux of the growing geopolitical contest between the Kremlin and the White House.

This is the future that awaits the world unless humanity takes dramatic steps to end a series of mushrooming environmental crises, finds a new report from the United Nations Environment Programme (UNEP).