All scorpions glow. A scorpion’s exoskeleton contains a thin transparent film called the hyaline layer, which fluoresces under black (ultraviolet) light. Even after hundreds of millions of years, the hyaline layers of fossilized scorpions still glow.

All scorpions glow. A scorpion’s exoskeleton contains a thin transparent film called the hyaline layer, which fluoresces under black (ultraviolet) light. Even after hundreds of millions of years, the hyaline layers of fossilized scorpions still glow.

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