Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
Hot water can freeze faster than cold water.
181
A cubic yard of air weighs about 2 pounds at sea level.
31
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
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
If the chemical sodium is dropped into water it will immediately and violently explode.
67