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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The average person's skin weighs twice as much as their brain.
131
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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Women have about four times as many foot problems as men; lifelong patterns of wearing high heels often are the culprit.
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A third of the human population sneezes when they look at the Sun. Light can signal the ocular nerve near the sinuses and triggers a sneeze.
18
Enamel is hardest substance in the human body.
61
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13