Sex burns about 360 calories per hour.
860
A hummingbird weighs less than a penny.
1k
One human hair can support 3 ounces.
191
The cat brain weighs about 30g.
167
The earth is approx. 6,588,000,000,000,000,000 tons.
175
Fidgeting can burn about 350 calories a day.
201
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 average person's skin weighs twice as much as their brain.
131