Do fish sleep? Sleeping underwater poses some challenges, even for fish. To ensure they get enough oxygen and evade predators, fish have found unique ways to get the rest they need.

Countless witnesses tell of balls of light that float above ground during thunderstorms. This eery sight has nothing to do with UFOs, and everything to do with bizarre, inexplicable physics.

Australia is famous for its deadly animals. Its plants pack a punch too. The Gympie gympie tree needs a body swerve if you’re averse to excruciating pain.

So, how do starfish eat? Have you ever extended your stomach out of your mouth when snackish? When you’re a starfish, eating gets complicated.

There are pros and cons to the small size of the zunzuncito, or bee hummingbird, the world’s smallest bird.

So many factors surrounding sleep still baffle scientists. Flies who have remarkably similar sleeping patterns to humans are helping to unlock some of these mysteries.