It’s the most energetic particle of its kind ever discovered, and scientists have no idea where it came from.

Here’s what to know about potential savings on your power bill, and the environmental benefits.

It is not uncommon for planes to strike wildlife, but most episodes don’t result in deaths or serious injuries.

Experts said they were “blind” to the Indian Ocean tsunami in 2004. Twenty years later, working toward a world without tsunami deaths is a challenge.