Pumice is the only rock that floats on water.
14
Most dust particles in your house are made from dead skin!
67
Each day, up to 150 species of life become extinct.
-23
Sound travels about 4 times faster in water than in air.
408
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
Scientists in Germany have developed a candy that doesn't cause cavities.
11
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20