Iron weighs more after it rusts.
16
Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
15
The bark of an older redwood tree is fireproof.
65
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
In zero gravity, a candle's flame is round and blue.
16
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21
All Humans Are 99.9% Genetically Identical and 98.4% of human genes are the same as the genes of a chimpanzee.
51