A new study theorizes that evolution ticks at different speeds, especially when a big group of organisms first appears.

Add Yahoo as a preferred source to see more of our stories on Google. A digital reconstruction of a million-year-old skull suggests humans may have diverged from our ancient ancestors 400,000 years ...

The story of primates is a tale of incredible variety and ancient roots, told through the lens of science, DNA, and time itself. These creatures, ranging from massive gorillas to tiny mouse lemurs, ...

A badly crushed cranium unearthed decades ago from a riverbank in central China that once defied classification is now shaking up the human family tree, according to a new analysis.Related video above ...

University of Queensland scientists have helped to construct a detailed timeline for bacterial evolution, suggesting some bacteria used oxygen long before evolving the ability to produce it through ...

For decades, the asteroid that ended the reign of the dinosaurs has stood as a symbol of total planetary devastation. But hidden within the chaos it unleashed was the seed of a biological rebirth. In ...

Digital reconstruction of a crushed skull from an ancient human relative could rewrite the timeline of human evolution, researchers said. A cranium dubbed Yunxian 2 was found in the Yunxian region of ...

A digital reconstruction of a million-year-old skull suggests humans may have diverged from our ancient ancestors 400,000 years earlier than thought and in Asia, not Africa, a study found. The ...