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
The 1 yen coin can be used as a weight, because it weighs exactly one gram. Also, it can float on water.
19
Fidgeting can burn about 350 calories a day.
201
The earth is approx. 6,588,000,000,000,000,000 tons.
175
By weight, Bone is five times stronger than steel.
417
The cat brain weighs about 30g.
167
You burn 26 calories in a one minute kiss.
605