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, ...

Scientists working in Ethiopia's Afar Region have made discoveries that rewrite our understanding of early human history. For ...

New discoveries of fossil clawed footprints from Australia, published in Nature, push the origin of reptiles back in time by at least 35 million years and change the entire timeline for the origin of ...

The molecular clock theory posits that genetic changes happen steadily and gradually, offering a reliable means for peering into the past and theorizing when complex life first emerged. However, there ...

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 ...