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
A hummingbird weighs less than a penny.
1k
You burn 26 calories in a one minute kiss.
605
Fidgeting can burn about 350 calories a day.
201
There are times when you're walking that the pressure on your feet exceeds your body weight, and when you're running, it can be three or four times your weight.
62
The elephant brain weighs about 6,000g.
274
Dieters who sleep more take off more fat that those who sleep less.
159
By weight, Bone is five times stronger than steel.
417