Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
A ball of glass will bounce higher than a ball made of rubber.
73
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
In zero gravity, a candle's flame is round and blue.
16
Balsa wood is classified as a hard wood!
41
Indoor pollution is 10 times more toxic than outdoor pollution.
62
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
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9