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
The average sperm cell swims at 8 inches per hour.
4
Your heart will pump about 212 million liters in its lifetime.
26
One human hair can support 3 ounces.
191
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13