Aluminum used to be more valuable than gold!
84
Indoor pollution is 10 times more toxic than outdoor pollution.
62
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
In zero gravity, a candle's flame is round and blue.
16
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
The storage capacity of human brain exceeds 4 Terrabytes.
140
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7