There are approximately three chickens for every human on Earth.
13
There are about 255 babies born worldwide every minute.
46
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
Only about 2% of the world population has green eyes.
36
Every person in the world can fit in Texas and be given over 1000 sq ft in which to live.
14
Roughly 90% of the world's population live in the northern hemisphere.
18