The sound you hear when you crack your knuckles is actually the sound of nitrogen gas bubbles bursting.
244
Not swinging your arms when you walk increases the effort of walking by 12%, the equivalent of walking 20% faster or carrying a 10 kg backpack.
12
If left alone, 70% of birthmarks gradually fade away.
193
The 'L.L.' in L.L. Bean stands for 'Leon Leonwood'.
30
There are more nerve cells in the human brain than there are stars in the Milky Way.
349
It is impossible to hum if your nose is plugged.
366
If you dropped an aerodynamic object (such as a bullet) from the Empire State Building, you could kill someone.
132
Bullet proof vests, fire escapes, windshield wipers, and laser printers were all invented by women.
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