Pumice is the only rock that floats on water.
14
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
No matter how cold it gets, gasoline will not freeze.
107
If the chemical sodium is dropped into water it will immediately and violently explode.
67
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Each day, up to 150 species of life become extinct.
-23
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310