If the population of China walked past you, in single file, the line would never end because of the rate of reproduction.
1k
A third of the human population sneezes when they look at the Sun. Light can signal the ocular nerve near the sinuses and triggers a sneeze.
18
Nearly half of the entire world's adult population has never drunk alcohol.
12
Although African-Americans make up only 13% of the U.S. population, they accounted for one half of the estimated new HIV/AIDS diagnoses in 2004.
70
There are about 255 babies born worldwide every minute.
46
Roughly 90% of the world's population live in the northern hemisphere.
18
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11