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
The earth is approx. 6,588,000,000,000,000,000 tons.
175
In 1963, the US Military created an artificial ring around Earth, similar to that of the planet Saturn. The ring was made of copper needles and was used for worldwide communications in the case that the Soviets disabled all other methods of communication.
26
According to a 2011 poll, 32% of Russians believe that the Sun orbits Earth.
11
Earth is the only planet in our solar system that's not named after a god or goddess.
17
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
A single speck of dust is half way in size between a subatomic particle and the Earth.
15