Half of all Americans over the age of 55 have no teeth.
39
Muhammad is the most common name in the world.
96
Babies' eyes do not produce tears until the baby is approximately six to eight weeks old.
58
Females learn to talk earlier, use sentences earlier, and learn to read more quickly than males.
119
Children laugh about 400 times a day, while adults laugh on average only 15 times a day.
973
The average person falls asleep in seven minutes.
115