Babies' eyes do not produce tears until the baby is approximately six to eight weeks old.
58
Children's sense of smell is better than adults'.
860
Children grow faster in the springtime than any other season during the year.
108
40% of people who are rejected in romantic love slip into clinical depression.
72
Males sweat 40% more than females.
104
People who have a strong friendship possess the ability to communicate with one another through facial expressions.
46
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11