The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
Research indicates that plants grow healthier when they are stroked.
173
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
The force of a suction cup is calculated using F=AP.
15
No matter how cold it gets, gasoline will not freeze.
107
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Iron weighs more after it rusts.
16
Brass doorknobs automatically disinfect themselves in about 8 hours.
18