Iron weighs more after it rusts.
16
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
Oak trees produce 2,200 acorns in a season, but each acorn only has a 1 in 10,000 chance of becoming an oak tree.
304
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
Balsa wood is classified as a hard wood!
41
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75