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
It takes a drop of ocean water more than 1,000 years to circulate around the world.
61
There are approximately three chickens for every human on Earth.
13
Even Antarctica has an area code. It's 672.
58
The 'King Ranch' in Texas is bigger than the state of Rhode Island.
49
Australia's Great Barrier Reef is 1,250 miles long!
45
A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
59
Venice Island was built on a foundation of tree trunks. 1200 years later, those same trunks still support almost all of central Venice.
8