If the chemical sodium is dropped into water it will immediately and violently explode.
67
Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
Pumice is the only rock that floats on water.
14
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
The average temperature at 40,000 feet above sea level is -60 F.
56
Diamonds can be shattered with a hammer.
-104
Some toothpastes and deodorants contain the same chemicals found in antifreeze.
38
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21