Tigers can see 6 times better at night than humans.
305
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
The average person's skin weighs twice as much as their brain.
131
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Women have about four times as many foot problems as men; lifelong patterns of wearing high heels often are the culprit.
111
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
A man's beard grows fastest when he anticipates sex.
239