Every person in the world can fit in Texas and be given over 1000 sq ft in which to live.
14
Mexico City is built on top of an underground resevoir!
47
A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
59
Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
55
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