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
The average sperm cell swims at 8 inches per hour.
4
Most of us have microscopic, worm like mites named Demodex that live in our eyelashes and have claws and a mouth.
-137
It takes about 20 seconds for a red blood cell to circle the whole body.
102
Babies crawl an average of 200m a day.
212
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
A man's beard grows fastest when he anticipates sex.
239