The Amazon rainforest produces more than 20% the world's oxygen supply.
182
If Antarctica's ice sheets melted, the worlds oceans would rise by 60 to 65 metres (200 - 210ft) - everywhere
181
Check your map! Virginia extends farther west than West Virginia.
67
Australia's Great Barrier Reef is 1,250 miles long!
45
The city of Houston, Texas is built on a swamp and is slowly sinking!
89
An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
243
The Dallas/Ft. Worth airport is larger than New York City's Manhattan Island.
62
The warmest temperature ever recorded on Antarctica was 3 degrees F.
175