When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92
Early American humans hunted car-size armadillos and used their shells for houses.
12
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
A human being loses an average of 40 to 100 strands of hair a day.
133
You forget 90% of your dreams.
256
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22