Sound at the right vibration can bore holes through a solid object.
134
The force of a suction cup is calculated using F=AP.
15
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
The smell of freshly cut grass is actually a plant distress call.
31
One barrel of petroleum holds 42 gallons.
20
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199