It takes a drop of ocean water more than 1,000 years to circulate around the world.
61
An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
243
The average ice berg weighs 20,000,000 tons!
54
The names of the continents all end with the same letter with which they start, excluding the North and South infront of AmericA.
86
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
Israel's Dead Sea is 1,312 feet below sea level.
48
The warmest temperature ever recorded on Antarctica was 3 degrees F.
175
More than 25% of the world's forests are in Siberia.
51