The Atlantic Ocean is saltier than the Pacific Ocean.
54
It takes a drop of ocean water more than 1,000 years to circulate around the world.
61
More than 25% of the world's forests are in Siberia.
51
Check your map! The Pacific entrance of the Panama Canal is farther East than the Atlantic entrance.
40
An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
243
Check your map! Virginia extends farther west than West Virginia.
67
The Niagara Falls moves upstream at an average rate of about 295ft a century!
48