There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
Your heart will pump about 212 million liters in its lifetime.
26
When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
In ancient Egypt, priests plucked EVERY hair from their bodies, including their eyebrows and eyelashes.
130
Pain occurs when sounds are above 130 db.
124
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
Research has determined that most people are happiest at 7:26pm on a Saturday night.
69