Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
Research indicates that plants grow healthier when they are stroked.
173
Balsa wood is classified as a hard wood!
41
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
Pumice is the only rock that floats on water.
14
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118