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The tallest waterfall no one has ever seen

It drops more than 2 miles, and sailors passing right over it have no idea it's there.

The backyard bug that knows the temperature

Grab a timer tonight. All you need is 15 seconds, a little math, and a very noisy neighbor.

The River So Deep Fish Can't Cross It

It's also the deepest river in the world.

Why astronauts need new suits in space

Something happens to their bodies after a few weeks up there, and it has to do with their backbones.

What Makes the Northern Lights Glow?

It Snows... Metal? Only on Venus

Weird Fact About How Flamingos Eat

This Animal Drinks Like a Fire Hose

Why One King Has No Mustache

How Far Can Elephants Swim?