The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
Scientists aren't sure what color dinosaurs were.
312
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
Balsa wood is classified as a hard wood!
41
One 75-watt bulb gives more light than three 25-watt bulbs.
57