Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
Most dust particles in your house are made from dead skin!
67
Liquid TIDE laundry detergent glows under a blacklight.
96
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
Iron weighs more after it rusts.
68
The average temperature at 40,000 feet above sea level is -60 F.
56