The world's tallest man reached 8 feet 11 inches at 21.
202
People who have a strong friendship possess the ability to communicate with one another through facial expressions.
46
One million Americans, about 3,000 each day, take up smoking each year. Most of them are children.
-86
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
Women have a slightly higher average IQ than men.
164
Every workday, 6.7 million people commute to Manhattan!
26
47% of people have a nightmare at least once a month.
186