The human sigh acts as a physiological reset button.
23
Our brains have a negativity bias and will remember bad memories more than good ones.
15
Early American humans hunted car-size armadillos and used their shells for houses.
12
Tigers can see 6 times better at night than humans.
305
Cats have a weak sense of taste. They have only 473 tastebuds, humans have 9,000.
307
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118