Grandma used to say that if a woman cried while chopping onions, it meant she was very jealous. But science has a different explanation, and we're here to show you!

So, if astrobiologists ever do find alien life with a weird chemistry that uses some liquid other than water, it's not likely ...

In the eastern reaches of Java, Indonesia, the Kawah Ijen volcano stuns the world with a spectacle of neon-blue flames ...