Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
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
If you blowtorch Pepto-Bismol, you would get a hunk of metal.
114
For every gallon of sea water, you get more than a quarter pound of salt.
45
If you are locked in a completely sealed room, you will die of carbon dioxide poisoning first before you will die of oxygen deprivation.
117