Your fingernails grow faster in summer.
744
Enamel is hardest substance in the human body.
61
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
Only humans shed emotional tears.
331
The human body contains over a billion miles of DNA.
147
Obsessive nose picking is called Rhinotillexomania.
101
By weight, Bone is five times stronger than steel.
417
Tigers can see 6 times better at night than humans.
305