Israel's Dead Sea is 1,312 feet below sea level.
48
The warmest temperature ever recorded on Antarctica was 3 degrees F.
175
The Amazon rainforest produces more than 20% the world's oxygen supply.
182
Check your map! Virginia extends farther west than West Virginia.
67
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
An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
243
If Antarctica's ice sheets melted, the worlds oceans would rise by 60 to 65 metres (200 - 210ft) - everywhere
181
The Atlantic Ocean is saltier than the Pacific Ocean.
54