The Niagara Falls moves upstream at an average rate of about 295ft a century!
48
The city of Houston, Texas is built on a swamp and is slowly sinking!
89
Mexico City is built on top of an underground resevoir!
47
The Amazon rainforest produces more than 20% the world's oxygen supply.
182
Even Antarctica has an area code. It's 672.
58
Israel's Dead Sea is 1,312 feet below sea level.
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