Iron weighs more after it rusts.
68
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
If the chemical sodium is dropped into water it will immediately and violently explode.
67
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
Most dust particles in your house come from dead skin.
48
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