A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
For every gallon of sea water, you get more than a quarter pound of salt.
45
In zero gravity, a candle's flame is round and blue.
16
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
The bark of an older redwood tree is fireproof.
65
Aluminum used to be more valuable than gold!
84
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