A third of the human population sneezes when they look at the Sun. Light can signal the ocular nerve near the sinuses and triggers a sneeze.
18
By weight, Bone is five times stronger than steel.
417
You forget 90% of your dreams.
256
The human brain doesn't stop developing until about 25 years old.
102
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
Obsessive nose picking is called Rhinotillexomania.
101
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
Early American humans hunted car-size armadillos and used their shells for houses.
12