Cold water weighs more than hot water.
93
If you are locked in a completely sealed room, you will die of carbon dioxide poisoning first before you will die of oxygen deprivation.
117
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
Pumice is the only rock that floats on water.
14
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
The average temperature at 40,000 feet above sea level is -60 F.
56