The Niagara Falls moves upstream at an average rate of about 295ft a century!
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There's a lake under Antarctica that is 25 million years old called Lake Vostok.
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Longest officially recognized place name is Taumatawhakatangihangakoauauotamateapokaiwhenuakitanatahu.
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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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The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
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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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A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
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