A hummingbird weighs less than a penny.
1k
Sex burns about 360 calories per hour.
860
You burn 26 calories in a one minute kiss.
605
Most elephants weigh less than a blue whale's tongue.
442
By weight, Bone is five times stronger than steel.
417
You burn more calories sleeping than you do watching television.
348
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