Tigers can see 6 times better at night than humans.
305
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
Our brains have a negativity bias and will remember bad memories more than good ones.
15
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
Having sex can make a woman look younger and more attractive due to the release of estrogen and collagen.
346
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
We share 70% of our DNA with a slug.
218
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132