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
Early American humans hunted car-size armadillos and used their shells for houses.
12
Babies crawl an average of 200m a day.
212
Research has determined that most people are happiest at 7:26pm on a Saturday night.
69
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
The human eye blinks an average of 4,200,000 times a year.
233
The average person's skin weighs twice as much as their brain.
131
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118