An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
A man's beard grows fastest when he anticipates sex.
239
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
Cats have a weak sense of taste. They have only 473 tastebuds, humans have 9,000.
307
Mushrooms are more closely related to humans than they are to plants.
47
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
There are about 255 babies born worldwide every minute.
46