The adult human brain weighs about 3 pounds (1,300-1,400 g).
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A person will create enough saliva to fill two average size swimming pools during his lifetime.
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The average person's skin weighs twice as much as their brain.
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There are about 255 babies born worldwide every minute.
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The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
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We forget why we have entered a room because passing through doors creates an ‘event boundary’ causing the brain to file away what we were just thinking about.
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Humans are capable of running 40 mph according to a study by bio-mechanical expert Dr. Matthew Bundle. Today's fastest man, Usain Bolt, has a top speed of 28 mph.
35
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
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