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
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
There are approximately three chickens for every human on Earth.
13
Denmark has twice as many pigs as there are people.
66
Only about 2% of the world population has green eyes.
36
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