The human body is a machine whose many parts – from the microscopic details of our cells to our limbs, eyes, liver and brain – have been assembled in fits and starts over the four billion years of our ...

As early humans spread from lush African forests into grasslands, their need for ready sources of energy led them to develop a taste for grassy plants, especially grains and the starchy plant tissue ...

A new study confirms that dolphins and orcas have reached a "point of no return" in their evolution, making a return to land ...

A fish thought to be evolution’s time capsule just surprised scientists. A detailed dissection of the coelacanth — a 400-million-year-old species often called a “living fossil” — revealed that key ...

Researchers found that ancient hominids—including early humans—were exposed to lead throughout childhood, leaving chemical traces in fossil teeth. Experiments suggest this exposure may have driven ...

Scientists have revealed the most complete skeleton yet of our 2 million-year-old ancestor Homo habilis.

One hundred years ago, a small town in eastern Tennessee captured the attention of the entire country. A biology teacher in Dayton was accused of teaching human evolution to his students — which was ...