The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
In zero gravity, a candle's flame is round and blue.
16
The smell of freshly cut grass is actually a plant distress call.
31
Billions of neutrinos pass unnoticed through your body every second.
6
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Pumice is the only rock that floats on water.
14
Each day is longer than the previous on by 0.00000002 seconds which is 13 seconds each century!
116
One barrel of petroleum holds 42 gallons.
20