A stunning discovery buried deep inside a cave for 1.8 million years is rewriting the story of human evolution.

A debate has been raging among planetary scientists for more than a decade—why are there so few exoplanets with a radius of ...

Fern-like bodies once covered the seafloor, some stretching as tall as a person. Yet for millions of years, the animal world ...

It is generally accepted by archaeologists that modern humans originated in Africa and dispersed worldwide, while other ...

Beneficial mutations happen quite frequently, but the world changes too fast for them to stick.

Rather than a single ancestral line steadily evolving toward modern humans, the evidence points to an evolutionary “bush” of ...