What took so long for humans to appear on Earth? The Earth is 4.6 billion years old, and life began about 4 billion years ago, yet humans—the only intelligent, technological species we know of in the ...

The pelvis is often called the keystone of upright locomotion. More than any other part of our lower body, it has been radically altered over millions of years to allow us to accomplish our bizarre ...

On Valentine’s Day in 2018, a team of scientists walked across a flat expanse in the badlands of northeastern Ethiopia, scanning the ground for fossils. An eagle-eyed field assistant, Omar Abdulla, ...

Seven million years ago, in the vast savannas and woodlands of ancient Africa, a small creature with a chimpanzee-like face took a step that would change everything. It stood upright and walked on two ...

In 1758, Swedish biologist Carl Linnaeus gave humans a scientific name: Homo sapiens, which means "wise human" in Latin. Although Linnaeus grouped humans with other apes, it was English biologist ...