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17 Wild Facts About The Human Body That I Absolutely Promise You Never Learned In School (Possibly Even Medical School)

"Once damaged, these hairs never grow back. You have around 3,500, and that is all you'll have throughout your entire life...
CNN

Atlas of cells offers a milestone leap in understanding of the human body

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Each human is a ...