A fossil bed in China containing animals up to 554 million years old suggests that we may have to reconsider the idea that life suddenly diversified during the Cambrian explosion ...

Until now, there was a conflict in the field of paleontology. Genetic analysis of how fast traits mutated and evolved ...

Hidden within fish DNA are powerful genetic twists that may explain one of nature’s biggest mysteries: how new species form so quickly. In Lake Malawi, hundreds of cichlid fish species evolved at ...

(Volodymyr Yakimchuk/Creatas Video+/Getty Images Plus) A seismic shift in the selection pressures acting on humans may have ...

For decades, ever since biologists recognized the potential environmental harms from climate change, they have worried that ...

Rudy Lerosey-Aubril A tiny claw in a 500-million-year-old fossil just rewrote the origin story of spiders. After a full da ...

A dominant “Hulk” lizard morph is wiping out other color variants, demonstrating how fast evolutionary balance can collapse.

When the environment changes dramatically, animals from mollusks to crows can make big changes in their behavior that enable ...

A new study shows evidence of “evolutionary rescue”—a kind of rapid evolution in which organisms genetically adapt to severe ...