One human hair can support 3 ounces.
191
Having sex can make a woman look younger and more attractive due to the release of estrogen and collagen.
346
We share 70% of our DNA with a slug.
218
Early American humans hunted car-size armadillos and used their shells for houses.
12
An average heart beats 100,000 times a day, pumping some 2,000 gallons of blood through its chambers. Over a 70-year life span, that adds up to more than 2.5 billion heartbeats.
73
A third of the human population sneezes when they look at the Sun. Light can signal the ocular nerve near the sinuses and triggers a sneeze.
18
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
Tigers can see 6 times better at night than humans.
305