Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
If you are locked in a completely sealed room, you will die of carbon dioxide poisoning first before you will die of oxygen deprivation.
117
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51