When glass breaks, the cracks move at speeds of up to 3,000 miles per hour.
423
You can tape a small mirror onto a cone speaker, play music and shine a laser on to the mirror and the reflection will look like a laser light show on your wall.
102
There are approximately three million shipwrecks on the ocean floor, worth billions in value and treasure.
22
Passengers on the Beijing subway can pay with plastic bottles.
29
People who laugh more are better able to tolerate pain - both physical and emotional.
36
"Strategic incompetence" is the art of avoiding certain tasks by pretending you don't know how to do them.
16
If you counted 24 hours a day, it would take 31,688 years to reach one trillion!
44
A fire in Australia has been burning for more than 5,000 years!
91