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.
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Roughly 90% of the world's population live in the northern hemisphere.
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There are approximately three chickens for every human on Earth.
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Denmark has twice as many pigs as there are people.
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Every person in the world can fit in Texas and be given over 1000 sq ft in which to live.
14
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.
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There are about 255 babies born worldwide every minute.
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