Tigers can see 6 times better at night than humans.
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In ancient Egypt, priests plucked EVERY hair from their bodies, including their eyebrows and eyelashes.
130
The human brain doesn't stop developing until about 25 years old.
102
Research has determined that most people are happiest at 7:26pm on a Saturday night.
69
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Modern humans first appeared about 200,000 years ago, but record keeping didn't begin until about 6,000 years ago. That means about 97% of human history is lost.
21
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
24