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
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21
Iron weighs more after it rusts.
68
Pure water (H2O) does not conduct electricity on its own.
46