When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
4.5 pounds of sunlight strike the Earth each day.
27
One barrel of petroleum holds 42 gallons.
20
If you blowtorch Pepto-Bismol, you would get a hunk of metal.
114
Hot water can freeze faster than cold water.
181
Nylon is made from coal and petroleum.
42
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
Neanderthal man had a brain capacity 100cc larger than modern man's.
50