Blue light fends off drowsiness in the middle of the night, which could be useful to people who work at night.
240
Only 8% of the world’s currency is physical money. The rest exists only on computers.
20
You burn 26 calories in a one minute kiss.
605
American car horns beep in the tone of F.
66
The 409 escalators in the London subway cover a distance every week which is approximately equivalent to several trips around the globe!
94
The original game of "Monopoly" was circular.
230
The "Cobra Effect" is where a solution for a problem actually makes the problem worse.
21
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