The average ice berg weighs 20,000,000 tons!
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Mexico City is built on top of an underground resevoir!
47
The Caspian Sea is also classed as the world's largest lake.
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Australia's Great Barrier Reef is 1,250 miles long!
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10 of the tributaries flowing into the Amazon river are as big as the Mississippi river.
41
Longest officially recognized place name is Taumatawhakatangihangakoauauotamateapokaiwhenuakitanatahu.
112
Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
55
The city of Houston, Texas is built on a swamp and is slowly sinking!
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