The Amazon rainforest produces more than 20% the world's oxygen supply.
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There's a lake under Antarctica that is 25 million years old called Lake Vostok.
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Check your map! The Pacific entrance of the Panama Canal is farther East than the Atlantic entrance.
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Longest officially recognized place name is Taumatawhakatangihangakoauauotamateapokaiwhenuakitanatahu.
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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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