Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
The average temperature at 40,000 feet above sea level is -60 F.
56
Most dust particles in your house come from dead skin.
48
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
Your brain is 80% water.
525
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
4.5 pounds of sunlight strike the Earth each day.
27
The force of a suction cup is calculated using F=AP.
15