Known as the Cambrian Explosion, this flurry of rapid evolution produced most of the animal phyla and ecosystems we see around us today. And it may have taken off because some of those early animals ...

As all children learn, everyone poos. But when did this begin? And what evolutionary and environmental changes accompanied ...

Combining archaeological evidence with ancient DNA and data on past climates shows us how long and winding the story of human ...

A sweet tooth for sugars from fruits and honey may have helped fuel brain growth in our primate cousins and early human ...

The cell membrane is a fundamental biological structure. These lipid layers surround and organize every cell, controlling ...

A new genomic study from Smithsonian scientists traces the honeycreepers' explosive diversification to the formation of O'ahu ...

Some cynodonts may have been giving birth to live young much sooner in evolutionary history than previously assumed. A new ...

Besieged by confusing and contradictory advice on which diets are healthiest for us, Chris Simms enjoys a clear-eyed view from evolutionary anthropologist Daniel Lieberman in his new book ...

The microscopic structure of fossilized bones helps solve ‘inscrutable mystery’ about the reproduction of ancestor of true ...

Genes are known to move within an organism, but between organisms—that’s another story.

Discover What’s Streaming On: Cause baby, now Criminal Minds: Evolu tion’s got Bad Blood… Another suspenseful season of the beloved crime drama is in the books, and Season 19’s finale marks the end of ...

Scientists may have uncovered evidence that a mammal ancestor was giving birth to live young 236 million years ago. A fossilized cynodont showed a neonatal growth line and an unusually large birth ...