One in 500 humans has one blue eye and one brown eye.
145
Senegalese women spend an average of 17.5 hours a week just collecting water.
27
Children grow faster in the springtime than any other season during the year.
108
Babies cry but they don't produce tears until one to three months after birth.
238
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
More boys than girls are born during the day; more girls are born at night.
120