After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
Human hair and fingernails continue to grow after death.
7
The human brain doesn't stop developing until about 25 years old.
102
Modern humans first appeared about 200,000 years ago, but record keeping didn't begin until about 6,000 years ago. That means about 97% of human history is lost.
21
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
All 13 minerals necessary for human life can be found in alcohol beverages.
282
On average a woman has 4 sexual partners in her lifetime.
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