The scientific wonderers at What If summarize the entire history of the world's most famous reptiles in a single, rapid-fire biological lesson.

Modern mammals are the result of millions of years of evolution. This video takes you back to their early forms, showing how ...

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

In the intricate machinery of the inner ear, hearing begins with a protein that moves a few billionths of a meter up to ...

Modular robots are easily expandable, know when they're upside down or stuck, and can march forward across all kinds of ...

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