Sound travels about 4 times faster in water than in air.
408
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
The force of a suction cup is calculated using F=AP.
15
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
There are more than 270 people cryogenically frozen in the hope that one day the technology will exist that can revive them and extend their lives.
13
Billions of neutrinos pass unnoticed through your body every second.
6
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18