Evolution

A study notes marked lifespan increases in mammals that have been castrated or kept on contraception

Scientists found the plague pathogen hiding in a 4,000-year-old sheep, shedding light on the earlier, more elusive pandemic before the Black Death

Meet the miniscule protist harboring jaw-dropping evolutionary secrets

The face of our sturdy evolutionary cousin comes into focus

Are you Team Sponge or Team Comb Jelly?

Perhaps intelligent life wasn’t so unlikely after all

Why do humans have such stupid knees, ankles, and backs?

How we adapt is shifting

Which came first: colorful signals or the color vision needed to see them?

From cells to cellphones, trial and error shapes it all

How evolution wired us to act against our own best interests

How one animal's oddity inspired Sewall Wright to take on one of Darwin's big ideas