Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
German chemists made a replica of a trophy the size of one molecule.
68
Dr.Jonas Salk, the man who came up with the cure for polio, didn’t patent the drug. This made the drug more affordable to the general public, and he lost out an an estimated $7 billion dollars for himself.
41
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
Liquid TIDE laundry detergent glows under a blacklight.
96
The bark of an older redwood tree is fireproof.
65