The Amazon rainforest produces more than 20% the world's oxygen supply.
182
The state with the longest coastline in the Continental U.S. is Michigan.
31
A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
59
The water of the Antarctica is so cold that nothing can rot there.
334
There's a lake under Antarctica that is 25 million years old called Lake Vostok.
109
Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
55