The average temperature at 40,000 feet above sea level is -60 F.
56
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
The bark of an older redwood tree is fireproof.
65
Nuclear power prevented an average of over 1.8 million deaths between 1971-2009 as a result of lower air pollution from reduced coal usage according to NASA.
5