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 blue eyes are better able to see in the dark.
153
Each year, around 24,000 Americans are bitten by rats!
65
Muhammad is the most common name in the world.
96
The average person in their lifetime will spend an estimated 20,160 minutes kissing!
212
On average, a human being will have sex more than 3,000 times and spend two weeks kissing in their lifetime.
161
Children's sense of smell is better than adults'.
860