If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
If the human eye was a digital camera, it would have 576 megapixels.
25
Enamel is hardest substance in the human body.
61
Obsessive nose picking is called Rhinotillexomania.
101
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
A person will create enough saliva to fill two average size swimming pools during his lifetime.
191
The human body contains over a billion miles of DNA.
147
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k