Enamel is hardest substance in the human body.
61
Chewing gum boosts your brain power.
285
Every year your body replaces 98% of your atoms.
119
The human body contains over a billion miles of DNA.
147
The human brain has the capacity to store everything that you experience.
4k
Dogs can be trained to identify the scent of lung cancer long before symptoms develop.
190
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515