Check your map! Virginia extends farther west than West Virginia.
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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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The Caspian Sea is also classed as the world's largest lake.
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Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
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The city of Houston, Texas is built on a swamp and is slowly sinking!
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