Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
24
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92
Mushrooms are more closely related to humans than they are to plants.
47
In one day, adult lungs move about 10,000 litres of air.
11
Tigers can see 6 times better at night than humans.
305
The average person's skin weighs twice as much as their brain.
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