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

During the Jurassic period, sharp-toothed flying reptiles with the wingspan of a modern golden eagle soared through the skies ...

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 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 ...

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 ...

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 ...

Bacteria, among the oldest of life forms, have lived in seemingly every possible habitat on the planet, from ocean trenches and mountaintops to hot springs and polar ice. Yet, they have left a limited ...