An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
243
A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
59
The warmest temperature ever recorded on Antarctica was 3 degrees F.
175
The North Atlantic gets 2.5 centimetres (1in) wider every year.
119
If Antarctica's ice sheets melted, the worlds oceans would rise by 60 to 65 metres (200 - 210ft) - everywhere
181
Forest growth in the US has exceeded harvest since the 1940’s. Today, we have more trees than any time in the past 100 years.
14
The city of Houston, Texas is built on a swamp and is slowly sinking!
89