In the Grand Canyon, Woodpeckers store their food in hollowed out holes in trees, but when a squirrel tries to steal the supply - they defend their stockpile.
How do you measure something that destroys everything it touches? That’s an essential question for tornado researchers. After he narrowly escaped the largest twister on record—a two-and-a-half-mile-wide behemoth with 300-mile-an-hour winds