The human eye blinks an average of 4,200,000 times a year.
233
The largest cell in the human body is the female egg and the smallest is the male sperm.
682
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
The human brain has the capacity to store everything that you experience.
4k
You forget 90% of your dreams.
256
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
By weight, Bone is five times stronger than steel.
417