A million dollars weighs about a metric ton. Hence the expression "a ton of money."
66
You burn 26 calories in a one minute kiss.
605
The 1 yen coin can be used as a weight, because it weighs exactly one gram. Also, it can float on water.
19
You burn more calories sleeping than you do watching television.
348
A hummingbird weighs less than a penny.
1k
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 elephant brain weighs about 6,000g.
274