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
The Earth sees about 760 thunderstorms every hour, scientists have calculated.
185
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46
The United States has paved enough roads to circle the Earth over 150 times.
72
According to a 2011 poll, 32% of Russians believe that the Sun orbits Earth.
11
The earth is approx. 6,588,000,000,000,000,000 tons.
175