It takes approximately 12 hours for food to entirely digest.
93
By weight, Bone is five times stronger than steel.
417
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
If the human eye was a digital camera, it would have 576 megapixels.
25
A person can live without food for about a month, but only about a week without water.
156
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
24