Fireflies mostly only glow at night because that's when the males are trying to get the attention of female fireflies, according to entomologist Dr. Sandy Smith.

Do fireflies glow just at night or do they glow during the day too?

<p>CBC Radio's Quirks and Quarks covers the quirks of the expanding universe to the quarks within a single atom... and everything in between.</p>

Science

Earth Sciences

CBC Radio's Quirks and Quarks covers the quirks of the expanding universe to the quarks within a single atom... and everything in between.

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Do fireflies glow just at night or do they glow during the day too?

Do fireflies glow just at night or do they glow during the day too?