If we look across the whole of the mammal branch of the tree of life, we find there are many groups of mammals that have ...

That’s the compelling argument made by Caleb Scharf—author and senior scientist for astrobiology at NASA Ames Research in ...

A groundbreaking international study changes the view that exposure to the toxic metal lead is largely a post-industrial phenomenon. The research reveals that our human ancestors were periodically ...

Saliva is a bodily fluid most of us take for granted despite the significant roles it plays: aiding in digestion, maintaining ...

A timeline of genetic changes in millions of years of human evolution shows that variants linked to higher intelligence appeared most rapidly around 500,000 years ago, and were closely followed by ...

New research along Turkey’s Ayvalık coast reveals a once-submerged land bridge that may have helped early humans cross from Anatolia into Europe. Archaeologists uncovered 138 Paleolithic tools across ...

Learn how the fossils of ancient organisms help scientists navigate deep time — and uncover Earth’s hidden history.