Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Sound travels about 4 times faster in water than in air.
408
Each day is longer than the previous on by 0.00000002 seconds which is 13 seconds each century!
116
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
German scientists claim to have evidence that suggests that our universe may exist inside of a computer simulated Matrix.
18
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
If the chemical sodium is dropped into water it will immediately and violently explode.
67