Israel's Dead Sea is 1,312 feet below sea level.
48
The Niagara Falls moves upstream at an average rate of about 295ft a century!
48
10 of the tributaries flowing into the Amazon river are as big as the Mississippi river.
41
There are approximately three chickens for every human on Earth.
13
A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
59
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
In one day, a full grown redwood tree expels more than 2 tons of water through its leaves.
56
