Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
24
Your fingernails grow faster in summer.
744
In one day, adult lungs move about 10,000 litres of air.
11
There are times when you're walking that the pressure on your feet exceeds your body weight, and when you're running, it can be three or four times your weight.
62
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
Cats have a weak sense of taste. They have only 473 tastebuds, humans have 9,000.
307
In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
198
The human sigh acts as a physiological reset button.
23