Iron weighs more after it rusts.
68
If you blowtorch Pepto-Bismol, you would get a hunk of metal.
114
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
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