Every year around 1 billion Valentine cards are sent. After Christmas it's a single largest seasonal card-sending occasion.
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Leather skin does not have any smell. The leather smell that you sense is actually derived from the materials used in the tanning process.
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The odds of being killed by falling out of bed are one in two million.
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If left alone, 70% of birthmarks gradually fade away.
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Harvard earns enough money from interest on its endowment that it could offer free tuition to every student and still profit.
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No matter its size or thickness, no piece of paper can be folded in half more than 8 times.
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The full moon causes a tidal wave to roll up the Amazon river once in day and once in night for a period of only three weeks in a year. This results in continuous 4m high wave that can be surfed for up to 13km.
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