It takes a drop of ocean water more than 1,000 years to circulate around the world.
61
Every person in the world can fit in Texas and be given over 1000 sq ft in which to live.
14
10 of the tributaries flowing into the Amazon river are as big as the Mississippi river.
41
Check your map! Virginia extends farther west than West Virginia.
67
Even Antarctica has an area code. It's 672.
58
The Niagara Falls moves upstream at an average rate of about 295ft a century!
48
The Sahara desert expands at about 1km per month.
90
The Atlantic Ocean is saltier than the Pacific Ocean.
54