Blue light fends off drowsiness in the middle of the night, which could be useful to people who work at night.
240
Passengers on the Beijing subway can pay with plastic bottles.
29
Each day, more than $40 Trillion Dollars changes hands worldwide.
37
Tsunamis ( tidal waves ) travel as fast as jet planes.
97
A Swiss man replaced his car's broken heater with a fully functional wood burning stove.
15
You are more likely to be killed by a champagne cork than a poisonous spider!
193
If you get water flowing fast enough, it can cut metal.
354
A sneeze travels out your mouth at over 100 m.p.h.!
29