Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
A cesium atom in an atomic clock beats over nine billion times a second.
43
Liquid TIDE laundry detergent glows under a blacklight.
96
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
Galalith is a type of plastic that can be made from milk. It is odourless, insoluble in water, biodegradable, anti-allergenic, antistatic, and virtually non-flammable.
1