By weight, Bone is five times stronger than steel.
417
The 1 yen coin can be used as a weight, because it weighs exactly one gram. Also, it can float on water.
19
The Main Library at Indiana University sinks over an inch every year because when it was built, engineers failed to take into account the weight of all the books that would occupy the building.
240
The average person's skin weighs twice as much as their brain.
131
The elephant brain weighs about 6,000g.
274
You burn 26 calories in a one minute kiss.
605
Dieters who sleep more take off more fat that those who sleep less.
159
One human hair can support 3 ounces.
191