If left alone, 70% of birthmarks gradually fade away.
193
Japanese engineers were asked to redesign the front end of the Bullet Train because it carried enough speed to create a sonic boom whenever it exited a tunnel. Residents could feel the blast from miles away.
11
Standard paper cannot be folded in half more than 7 times.
232
Babies are born without knee caps.
78
Drying your hands with paper towel will reduce the bacterial count by 45 - 60% on your hands. However, using a hand dryer will increase the bacteria on your hands by up to 255% because it blows out bacteria already living in the, conveniently, warm moist environment.
26
There are 170,000,000,000,000,000,000,000,000 ways to play the ten opening moves in a game of chess.
266
There are more nerve cells in the human brain than there are stars in the Milky Way.
349
You can immediately cool down a car that has been sitting under the sun by rolling down the window on one side and opening-closing the door on the other side 5-6 times.
23