The Amazon rainforest produces more than 20% the world's oxygen supply.
182
The state of Florida is bigger than England!
74
The Dallas/Ft. Worth airport is larger than New York City's Manhattan Island.
62
Mexico City is built on top of an underground resevoir!
47
A waterfall known as The Devil's Kettle empties water into a hole and nobody knows where it ends up!
18
If Antarctica's ice sheets melted, the worlds oceans would rise by 60 to 65 metres (200 - 210ft) - everywhere
181
Even Antarctica has an area code. It's 672.
58
More than 25% of the world's forests are in Siberia.
51