One 75-watt bulb gives more light than three 25-watt bulbs.
57
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
Most dust particles in your house come from dead skin.
48
Pure water (H2O) does not conduct electricity on its own.
46
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
The storage capacity of human brain exceeds 4 Terrabytes.
140
A cesium atom in an atomic clock beats over nine billion times a second.
43
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44