The cat brain weighs about 30g.
167
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
You burn 26 calories in a one minute kiss.
605
The earth is approx. 6,588,000,000,000,000,000 tons.
175
One human hair can support 3 ounces.
191
By weight, Bone is five times stronger than steel.
417
Sex burns about 360 calories per hour.
860
A hummingbird weighs less than a penny.
1k