The Amazon rainforest produces more than 20% the world's oxygen supply.
182
Israel's Dead Sea is 1,312 feet below sea level.
48
10 of the tributaries flowing into the Amazon river are as big as the Mississippi river.
41
The water between India and Sri Lanka is only 3-30 feet deep and was purportedly passable on foot until 1480 AD when a cyclone moved some sand around.
1
One cubic mile of seawater contains about 50 pounds of gold.
79
There's a lake under Antarctica that is 25 million years old called Lake Vostok.
109
In one day, a full grown redwood tree expels more than 2 tons of water through its leaves.
56
Even Antarctica has an area code. It's 672.
58