We share 70% of our DNA with a slug.
218
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
Early American humans hunted car-size armadillos and used their shells for houses.
12
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
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
The average person's skin weighs twice as much as their brain.
131