After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
By weight, Bone is five times stronger than steel.
417
Mushrooms are more closely related to humans than they are to plants.
47
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
The average person's skin weighs twice as much as their brain.
131
One human hair can support 3 ounces.
191
We forget why we have entered a room because passing through doors creates an ‘event boundary’ causing the brain to file away what we were just thinking about.
26
A person will create enough saliva to fill two average size swimming pools during his lifetime.
191