Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
55
Every person in the world can fit in Texas and be given over 1000 sq ft in which to live.
14
The warmest temperature ever recorded on Antarctica was 3 degrees F.
175
Check your map! The Pacific entrance of the Panama Canal is farther East than the Atlantic entrance.
40
If Antarctica's ice sheets melted, the worlds oceans would rise by 60 to 65 metres (200 - 210ft) - everywhere
181
An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
243
The Caspian Sea is also classed as the world's largest lake.
52
It takes a drop of ocean water more than 1,000 years to circulate around the world.
61