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
Indoor pollution is 10 times more toxic than outdoor pollution.
62
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
Sound at the right vibration can bore holes through a solid object.
134
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
If you blowtorch Pepto-Bismol, you would get a hunk of metal.
114