By weight, Bone is five times stronger than steel.
417
The cat brain weighs about 30g.
167
Fidgeting can burn about 350 calories a day.
201
One human hair can support 3 ounces.
191
You burn 26 calories in a one minute kiss.
605
The average person's skin weighs twice as much as their brain.
131
The elephant brain weighs about 6,000g.
274
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