Couples' personalities converge over time to make partners more and more similar.
235
A million dollars weighs about a metric ton. Hence the expression "a ton of money."
66
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.
14
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
At 90 degrees below zero, your breath will freeze in mid-air and fall to the ground.
25
In the case of an emergency, a Crayola crayon can be used as a candle and will burn for about 15 minutes.
36
Playing Tetris after a traumatic event can prevent the development of traumatic memories and reduce the chance of having flashbacks.
30