Indoor pollution is 10 times more toxic than outdoor pollution.
62
Most dust particles in your house come from dead skin.
48
Oak trees produce 2,200 acorns in a season, but each acorn only has a 1 in 10,000 chance of becoming an oak tree.
304
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
A cesium atom in an atomic clock beats over nine billion times a second.
43
Research indicates that plants grow healthier when they are stroked.
173
The only letter not appearing on the Periodic Table is the letter "J".
180