Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
15
Pumice is the only rock that floats on water.
14
Most dust particles in your house come from dead skin.
48
Research indicates that plants grow healthier when they are stroked.
173
German chemists made a replica of a trophy the size of one molecule.
68
According to studies, men change their minds two to three times more often than women.
72