A man's beard grows fastest when he anticipates sex.
239
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
It takes approximately 12 hours for food to entirely digest.
93
A human brain produces as many as 12,000 to 50,000 thoughts per day, depending on how deep a thinker a person is.
23
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 human body contains over a billion miles of DNA.
147
The average person's skin weighs twice as much as their brain.
131