The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
Cold water weighs more than hot water.
93
Iron weighs more after it rusts.
16
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
Sound at the right vibration can bore holes through a solid object.
134
Nearly 50% of the world's scientists are assigned to military projects.
71
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
The left ear is more responsive to words of love and emotion whispered into it than the right.
40