The Amazon rainforest produces more than 20% the world's oxygen supply.
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The city of Houston, Texas is built on a swamp and is slowly sinking!
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The state of Florida is bigger than England!
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If Manhattan had the same population density as Alaska, there would only be 15 people living there.
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Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
55
One cubic mile of seawater contains about 50 pounds of gold.
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Longest officially recognized place name is Taumatawhakatangihangakoauauotamateapokaiwhenuakitanatahu.
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