The harder you concentrate on falling asleep, the less likely you are to fall asleep.
34
Caffeine boosts memory.
405
Sunflowers can be used to clean up radioactive waste.
17
One human hair can support 3 ounces.
191
If you flip a coin ten times, the odds against its coming up with the same side showing each time are 1,023 to 1.
39
Coins usually survive in circulation for about 30 years.
66
There are more than 10 million bricks in the Empire State Building!
75
All the gold ever mined could be molded into a cube 60 feet high and 60 feet wide.
38