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
Roughly 90% of the world's population live in the northern hemisphere.
18
Every person in the world can fit in Texas and be given over 1000 sq ft in which to live.
14
Only about 2% of the world population has green eyes.
36
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
Denmark has twice as many pigs as there are people.
66
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11