A hummingbird weighs less than a penny.
1k
You burn more calories sleeping than you do watching television.
348
The cat brain weighs about 30g.
167
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
The 1 yen coin can be used as a weight, because it weighs exactly one gram. Also, it can float on water.
19
A million dollars weighs about a metric ton. Hence the expression "a ton of money."
66
One human hair can support 3 ounces.
191