A neutron star (what remains after a Super Nova) is so dense that a portion of it the size of a sugar cube would weigh as much as all of humanity, or more than all the cars in the United States.
5
Most elephants weigh less than a blue whale's tongue.
442
The 1 yen coin can be used as a weight, because it weighs exactly one gram. Also, it can float on water.
19
One human hair can support 3 ounces.
191
Dieters who sleep more take off more fat that those who sleep less.
159
Sex burns about 360 calories per hour.
860
By weight, Bone is five times stronger than steel.
417
The cat brain weighs about 30g.
167