A single speck of dust is half way in size between a subatomic particle and the Earth.
15
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46
The Earth sees about 760 thunderstorms every hour, scientists have calculated.
185
Earth is the only planet in our solar system that's not named after a god or goddess.
17
More than a dozen men have stood on the surface of the moon, but only three have been to Challenger Deep in the Marianas Trench, the deepest known spot in the ocean.
17
According to a study by the National Science Foundation, only half of Americans believe in evolution, and one in 4 don't know that the Earth orbits the Sun.
14
There are approximately three chickens for every human on Earth.
13