Modern humans first appeared about 200,000 years ago, but record keeping didn't begin until about 6,000 years ago. That means about 97% of human history is lost.
21
Your fingernails grow faster in summer.
744
In one day, adult lungs move about 10,000 litres of air.
11
Due to the angle at which the optic nerve enters the brain, staring at a blue surface during sex greatly increases the intensity of orgasms.
252
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
We forget why we have entered a room because passing through doors creates an ‘event boundary’ causing the brain to file away what we were just thinking about.
26
Our brains have a negativity bias and will remember bad memories more than good ones.
15
Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
24