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's still possible to see the division between East and West Germany due to different light bulbs.
5
It takes a drop of ocean water more than 1,000 years to circulate around the world.
61
In one day, a full grown redwood tree expels more than 2 tons of water through its leaves.
56
A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
59
The state with the longest coastline in the Continental U.S. is Michigan.
31
The Amazon rainforest produces more than 20% the world's oxygen supply.
182
The 'King Ranch' in Texas is bigger than the state of Rhode Island.
49