The Amazon rainforest produces more than 20% the world's oxygen supply.
182
Even Antarctica has an area code. It's 672.
58
Israel's Dead Sea is 1,312 feet below sea level.
48
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
Check your map! The Pacific entrance of the Panama Canal is farther East than the Atlantic entrance.
40
The state of Florida is bigger than England!
74