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
A cubic yard of air weighs about 2 pounds at sea level.
31
Iron weighs more after it rusts.
16
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
There is a surgical implant being developed that will give you an orgasm at the touch of a button.
20
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
One 75-watt bulb gives more light than three 25-watt bulbs.
57