A single speck of dust is half way in size between a subatomic particle and the Earth.
15
Pumice is the only rock that floats on water.
14
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
Iron weighs more after it rusts.
16
German scientists claim to have evidence that suggests that our universe may exist inside of a computer simulated Matrix.
18
Each day, up to 150 species of life become extinct.
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