Pain occurs when sounds are above 130 db.
124
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Early American humans hunted car-size armadillos and used their shells for houses.
12
In one day, adult lungs move about 10,000 litres of air.
11
Our brains have a negativity bias and will remember bad memories more than good ones.
15
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
Women have about four times as many foot problems as men; lifelong patterns of wearing high heels often are the culprit.
111