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
More than 25% of the world's forests are in Siberia.
51
Check your map! The Pacific entrance of the Panama Canal is farther East than the Atlantic entrance.
40
There are more than 50,000 earthquakes throughout the world every year!
47
The state with the longest coastline in the Continental U.S. is Michigan.
31
Europe is the only continent without a desert.
62
Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
55
The Amazon rainforest produces more than 20% the world's oxygen supply.
182