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
The names of the continents all end with the same letter with which they start, excluding the North and South infront of AmericA.
86
The North Atlantic gets 2.5 centimetres (1in) wider every year.
119
The Earth sees about 760 thunderstorms every hour, scientists have calculated.
185
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15