It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
People with light eye colors (like blue, green or grey) have a higher alcohol tolerance.
194
Women have a slightly higher average IQ than men.
164
Women end up digesting most of the lipstick they apply.
110
Studies suggest that people who appear to be constantly distracted have more "working memory" and "sharper brains".
13
One million Americans, about 3,000 each day, take up smoking each year. Most of them are children.
-86
91% of Americans eat turkey on Thanksgiving.
197