The 1 yen coin can be used as a weight, because it weighs exactly one gram. Also, it can float on water.
19
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
The earth is approx. 6,588,000,000,000,000,000 tons.
175
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
One human hair can support 3 ounces.
191
Most elephants weigh less than a blue whale's tongue.
442
A hummingbird weighs less than a penny.
1k
You burn 26 calories in a one minute kiss.
605