When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
Early American humans hunted car-size armadillos and used their shells for houses.
12
In ancient Egypt, priests plucked EVERY hair from their bodies, including their eyebrows and eyelashes.
130
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
An average heart beats 100,000 times a day, pumping some 2,000 gallons of blood through its chambers. Over a 70-year life span, that adds up to more than 2.5 billion heartbeats.
73
The human brain has the capacity to store everything that you experience.
4k
A person can live without food for about a month, but only about a week without water.
156