Sound travels about 4 times faster in water than in air.
408
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
Out of all the senses, smell is most closely linked to memory.
146
Nearly 50% of the world's scientists are assigned to military projects.
71
No matter how cold it gets, gasoline will not freeze.
107
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
42
Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11