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

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

A 113-million-year-old hell ant fossil discovered in northeastern Brazil's Crato Formation represents the oldest known ant specimen in the fossil record. The remarkable preservation reveals ...

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 ...

Bacterial evolution and oxygen adaptation: A timeline built from genomic, fossil, and chemical data. Colors show oxygen states: anaerobic (blue), aerobic (red), and proportion of aerobic lineages in ...

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 ...