Evolution

The cultural forces that fueled our success now threaten to end it.

A remarkable tale of evolution.

What we can learn from the macabre diets of a curious species of cichlids.

It’s females who vaulted biological hurdles and forged our evolutionary success.

Joseph LeDoux on writing his new book, "The Four Realms of Existence: A New Theory of Being Human."

With his wife, Leda Cosmides, John Tooby transformed our understanding of human nature.

Orchids were Darwin’s “abominable mystery.” They continue to elude science—and efforts to save them.

When sleep doesn’t come on time.

600 million years ago, the sea sponge had a dream.

Violence is written in their genes.

Adaptations that once saved creatures are now putting them in peril.

Parasites, weather, and luck can play a role in determining whether some animals are male or female.