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
There are approximately three chickens for every human on Earth.
13
Every person in the world can fit in Texas and be given over 1000 sq ft in which to live.
14
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
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
About two hundred babies are born worldwide every minute.
237
There are about 255 babies born worldwide every minute.
46