After evolving from horses some two million years ago, zebras earned their stripes. But why? A team of scientists has found part of the answer.
There really was a giant, flightless bird - Gastornis - with a head the size of a horse's wandering the high Arctic some 53 million years ago.
Some people have naturally won what the rest of us consider to be the genetic lottery: they're tall and they're thin.
Humans are extremely choosy when it comes to mating and dating. So what is the evolutionary point of love? A new study may have the answer.
A statement made by Neil deGrasse Tyson, released after NASA debuted a new image of Earth on the 46th anniversary of the 1969 moon walk.
There is no longer any doubt: We are entering a mass extinction that threatens humanity's existence.
A definitive geological timeline shows that a series of massive volcanic explosions 66 million years ago contributed to the extinction of the dinosaurs.
Humans have one feature that primates, Neanderthals, archaic humans - any other species, for that matter - don't possess: chins.
An exhaustive new study by paleontologists provides conclusive evidence that the dinosaur Brontosaurus is distinct from Apatosaurus.
Scientists have debated whether one of the largest volcanic cataclysms in Europe contributed to Neanderthals' extinction. New research may offer an answer.
Thanks to the new discovery of a skull from about 55,000 years ago, perspectives on early Homo sapiens migration have changed.
An analysis of geologic history may help solve the riddle of the Cambrian explosion, the rapid diversification of animal life 530 million years ago.
The most comprehensive family tree of meat-eating dinosaurs ever created is enabling scientists to discover key details of how birds evolved from them.
A feathered fossil, from a raptorial dinosaur fossil with exceptionally long feathers, has provided exciting insights into dinosaur flight.
Researchers has for the first time deciphered the intestinal bacteria of present-day hunter-gatherers, and found lifestyle determines gut microbes.
No doubt your family tree gets fuzzy the further back you go.