Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
55
Check your map! Virginia extends farther west than West Virginia.
67
10 of the tributaries flowing into the Amazon river are as big as the Mississippi river.
41
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
Even Antarctica has an area code. It's 672.
58
The Sahara desert expands at about 1km per month.
90
There's a lake under Antarctica that is 25 million years old called Lake Vostok.
109
Every person in the world can fit in Texas and be given over 1000 sq ft in which to live.
14