For every gallon of sea water, you get more than a quarter pound of salt.
45
Columbia University has developed an artificial tree that passively soaks up carbon dioxide from the air using "leaves" that are 1,000 times more efficient than true leaves that use photosynthesis.
15
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
The gas that gives rotten eggs their distinctive foul smell may slow ageing and block damaging chemical reactions inside cells, according to scientists in China.
5
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Balsa wood is classified as a hard wood!
41
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79