The United States has paved enough roads to circle the Earth over 150 times.
72
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
In 1859, the largest known geomagnetic storm struck the Caribbean, causing an aurora and telegraphs could even operate without a power source.
25
The Earth sees about 760 thunderstorms every hour, scientists have calculated.
185
The light hitting the earth right now is 30 thousand years old.
163
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
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