The adult human brain weighs about 3 pounds (1,300-1,400 g).
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When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
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A human brain produces as many as 12,000 to 50,000 thoughts per day, depending on how deep a thinker a person is.
23
There are times when you're walking that the pressure on your feet exceeds your body weight, and when you're running, it can be three or four times your weight.
62
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
In ancient Egypt, priests plucked EVERY hair from their bodies, including their eyebrows and eyelashes.
130
Our eyes are always the same size from birth, but our nose and ears never stop growing.
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