A person can live without food for about a month, but only about a week without water.
156
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
Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
15
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
You forget 90% of your dreams.
256
Fingers prune underwater not because of them absorbing the water or washing away the oil, but because of an evolutionary trait caused by the brain to enhance the grip of your fingers underwater.
24
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13