The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
The smell of freshly cut grass is actually a plant distress call.
31
A cesium atom in an atomic clock beats over nine billion times a second.
43
Balsa wood is classified as a hard wood!
41
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
A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
57
Some toothpastes and deodorants contain the same chemicals found in antifreeze.
38