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Sara Lewis studies fireflies. And it turns out they're not just a pretty flashing light on a summer night. She explains how a firefly glows -- and how humans are harnessing that glow for health and medical research (and even to make our food safer).
Sara Lewis: The loves and lies of fireflies
Somerset County 4-H
사라 루이스 (Sara Lewis): 반딧불의 사랑과 거짓말
Amazing animals
Sara Lewis: Les amours et les mensonges des lucioles
Amazing animals
Amazing animals
Big Maple Property Maintenance
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