Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20
Pumice is the only rock that floats on water.
14
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
In zero gravity, a candle's flame is round and blue.
16
A ball of glass will bounce higher than a ball made of rubber.
73
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7