Most dust particles in your house come from dead skin.
48
Liquid TIDE laundry detergent glows under a blacklight.
96
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44