Forest fires move faster uphill than downhill.
52
The city of Houston, Texas is built on a swamp and is slowly sinking!
89
The Amazon rainforest produces more than 20% the world's oxygen supply.
182
In one day, a full grown redwood tree expels more than 2 tons of water through its leaves.
56
Connecticut and Rhode Island never ratified the 18th Amendment (Prohibition).
25
It's still possible to see the division between East and West Germany due to different light bulbs.
5
The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
63