The Amazon rainforest produces more than 20% the world's oxygen supply.
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The Dallas/Ft. Worth airport is larger than New York City's Manhattan Island.
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Forest fires move faster uphill than downhill.
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An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
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The Niagara Falls moves upstream at an average rate of about 295ft a century!
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There are approximately three chickens for every human on Earth.
13
More than a dozen men have stood on the surface of the moon, but only three have been to Challenger Deep in the Marianas Trench, the deepest known spot in the ocean.
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Longest officially recognized place name is Taumatawhakatangihangakoauauotamateapokaiwhenuakitanatahu.
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