When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
The human body contains over a billion miles of DNA.
147
The average person's skin weighs twice as much as their brain.
131
The human eye blinks an average of 4,200,000 times a year.
233
Babies crawl an average of 200m a day.
212
If your DNA was stretched out it would reach to the moon 6,000 times.
256