There are 635,013,559,599 possible hands in a game of bridge.
39
The "Cobra Effect" is where a solution for a problem actually makes the problem worse.
21
Passengers on the Beijing subway can pay with plastic bottles.
29
Paper money is not made from wood pulp but from cotton. This means that it will not disintegrate as fast if it is put in the laundry.
37
The odds of being killed by falling out of bed are one in two million.
136
When glass breaks, the cracks move at speeds of up to 3,000 miles per hour.
423