The Amazon rainforest produces more than 20% the world's oxygen supply.
182
Even Antarctica has an area code. It's 672.
58
In one day, a full grown redwood tree expels more than 2 tons of water through its leaves.
56
The Niagara Falls moves upstream at an average rate of about 295ft a century!
48
The average ice berg weighs 20,000,000 tons!
54
The water of the Antarctica is so cold that nothing can rot there.
334
Check your map! Virginia extends farther west than West Virginia.
67
Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
55