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
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
If the chemical sodium is dropped into water it will immediately and violently explode.
67
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
Each day, up to 150 species of life become extinct.
-23
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
No matter how cold it gets, gasoline will not freeze.
107