The mystery that spans every feline, from tabby house cats to Siberian tigers.

A friend and pupil of Aristotle, Theophrastus isn’t always credited for launching botany, and much else. 

How did part of a black-widow venom gene end up in a virus that infects one of the world's most successful bacteria?

The secret food source of a seafood delicacy

Their bodies pile up by the hundreds, nourishing the Serengeti—and contributing to the circle of life.

Most of the Earth’s surface is ocean. Life began there. But marine life accounts for only 15 percent of the world’s species.