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.
23
The odds of being killed by falling out of bed are one in two million.
136
If left alone, 70% of birthmarks gradually fade away.
193
Harvard earns enough money from interest on its endowment that it could offer free tuition to every student and still profit.
13
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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