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Light up summer nights with living lanterns! Fireflies are beetles that produce bioluminescent light through chemical reactions in their abdomens—flashing patterns used for courtship. These magical insects appear on warm evenings, their cold light 100% efficient (no heat loss), creating nature's most enchanting displays in backyards and forests.
✨ Fun fact: Firefly light is the most efficient light in the world—100% of energy becomes light with zero heat, inspiring research for more efficient LED technology!
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