Who were our earliest ancestors? The answer could lie in a special group of single-celled organisms with a cytoskeleton similar to that of complex organisms, such as animals and plants.

Researchers who have studied genetic evidence of iguanas suggest the ancient reptiles traveled nearly 5,000 miles from North ...

In nature, interactions between species are often framed in terms of survival—those that hunt and those that are hunted. But ...

A study finds that even in the most optimistic scenarios, grass-fed beef produces no less planet-warming carbon emissions ...

A series of reported outbreaks at some of the largest egg producers in the U.S. have caused a shortage in egg supplies, as ...