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
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
According to a 2011 poll, 32% of Russians believe that the Sun orbits Earth.
11
There are approximately three chickens for every human on Earth.
13
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
Ants make up 1/10 of the total world animal tissue. The total biomass of all the ants on Earth is about equal to the total biomass of all the people.
85