Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
One 75-watt bulb gives more light than three 25-watt bulbs.
57
A ball of glass will bounce higher than a ball made of rubber.
73
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
For a high school science fair project, 17-year-old Michio Kaku built a particle accelerator in his parent's garage that was able to generate a magnetic field 20,000 times greater than the Earth's and produce collisions powerful enough to create antimatter.
34
Scientists in Germany have developed a candy that doesn't cause cavities.
11
A cubic yard of air weighs about 2 pounds at sea level.
31