Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
Columbia University has developed an artificial tree that passively soaks up carbon dioxide from the air using "leaves" that are 1,000 times more efficient than true leaves that use photosynthesis.
15
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
One third of the electricity produced on earth is used to power electric light bulbs!
75
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
The average temperature at 40,000 feet above sea level is -60 F.
56