More than 25% of the world's forests are in Siberia.
51
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
It takes a drop of ocean water more than 1,000 years to circulate around the world.
61
There are more than 50,000 earthquakes throughout the world every year!
47
An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
243
Check your map! The Pacific entrance of the Panama Canal is farther East than the Atlantic entrance.
40
Louisiana is the only state that grows in land area every year (Due to alluvial deposits from the Mississippi River).
41