It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
Studies suggest that people who appear to be constantly distracted have more "working memory" and "sharper brains".
13
One in 500 humans has one blue eye and one brown eye.
145
The average bra size today is 36C. Ten years ago it was 34B.
266
Children laugh about 400 times a day, while adults laugh on average only 15 times a day.
973
Many people in parts of China eat insects. Some common insects are bean worms, scoprions, and locusts.
-11
44% of kids watch television before they go to sleep.
106
