The human brain doesn't stop developing until about 25 years old.
102
Most of us have microscopic, worm like mites named Demodex that live in our eyelashes and have claws and a mouth.
-137
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
We share 70% of our DNA with a slug.
218
Early American humans hunted car-size armadillos and used their shells for houses.
12
Enamel is hardest substance in the human body.
61
Cats have a weak sense of taste. They have only 473 tastebuds, humans have 9,000.
307