By weight, Bone is five times stronger than steel.
417
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
Human hair and fingernails continue to grow after death.
7
Humans are capable of running 40 mph according to a study by bio-mechanical expert Dr. Matthew Bundle. Today's fastest man, Usain Bolt, has a top speed of 28 mph.
34
Obsessive nose picking is called Rhinotillexomania.
101
Yawns are more contagious among people with closer relationships.
163