Your brain is 80% water.
525
Iron weighs more after it rusts.
16
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
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
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
The average home creates more pollution than does the average car.
33
Most dust particles in your house come from dead skin.
48