Cats have a weak sense of taste. They have only 473 tastebuds, humans have 9,000.
307
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
All 13 minerals necessary for human life can be found in alcohol beverages.
282
One human hair can support 3 ounces.
191
The average sperm cell swims at 8 inches per hour.
4