Humans glow — the body emits visible light 1,000 times weaker than the human eye can detect.
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Operation Mongoose aimed to destabilize Cuba in the early 1960s.
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Pacemakers help regulate abnormal heart rhythms.
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The human spine consists of 33 vertebrae.
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A gecko can climb vertical surfaces using microscopic hairs on its feet.
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The invention of dialysis allows patients with kidney failure to survive.
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Certain fish can inflate their bodies to appear larger.
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Your brain uses patterns to recognize faces almost instantly.
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