Chimpanzees, birds, and even rats have shown signs of reviewing their own past to prepare for the future.
Jellyfish, plankton, and even sharks rise from the deep. Scientists aren’t exactly sure why.
Domesticating horses changed humanity forever. Where and when did it first happen?
One of the stranger aspects of Africa's rapid urbanization is the influx of livestock in new, unplanned towns -- and the diseases they bring with them.
Colorado and Washington are about to find out.
A new study suggests that giant bears, sloths, and saber-toothed cats died because warming temperatures cocked the gun, and people pulled the trigger.
Adolescent tyrannosaurs’ lean bodies may have given them hunting skills that allowed them to avoid competition with their beefier elders.