Why fireflies shine their lights at the same time – and why it might lead to new technologies episode artwork

EPISODE · May 14, 2026 · 8 MIN

Why fireflies shine their lights at the same time – and why it might lead to new technologies

from In The NOCO · host KUNC

Fireflies lighting up the sky on a summer night can feel magical – especially if you happen to catch them as they light up at the same time. Which brings up one of the mysteries of the insect world: How do fireflies shine their lights in sync with one another? A pair of computer science researchers with the University of Colorado Boulder set out to better understand how fireflies do this – and why.    Orit Peleg is an associate professor in the Department of Computer Science and the BioFrontiers Institute at CU Boulder.  She and fellow CU research scientist Owen Martin spent time in a South Carolina swamp to study what causes the phenomenon known as firefly synchrony.  They spoke with Erin O’Toole about what they learned about how fireflies communicate, and how that understanding might help develop new technologies. * * * * *Sign up for the In The NoCo newsletter: Visit KUNC.org Questions? Feedback? Story ideas? Email us: [email protected] Like what you're hearing? Help more people discover In The NoCo by rating the show on your favorite podcast app. Thanks!  Host and Producer: Erin O'Toole Executive Producer: Brad Turner  Theme music by Robbie Reverb Additional music by Blue Dot Sessions In The NoCo is a production of KUNC News and Community Radio for Northern Colorado.

Fireflies lighting up the sky on a summer night can feel magical – especially if you happen to catch them as they light up at the same time. Which brings up one of the mysteries of the insect world: How do fireflies shine their lights in sync with one another? A pair of computer science researchers with the University of Colorado Boulder set out to better understand how fireflies do this – and why.    Orit Peleg is an associate professor in the Department of Computer Science and the BioFrontiers Institute at CU Boulder.  She and fellow CU research scientist Owen Martin spent time in a South Carolina swamp to study what causes the phenomenon known as firefly synchrony.  They spoke with Erin O’Toole about what they learned about how fireflies communicate, and how that understanding might help develop new technologies. * * * * *Sign up for the In The NoCo newsletter: Visit KUNC.org Questions? Feedback? Story ideas? Email us: [email protected] Like what you're hearing? Help more people discover In The NoCo by rating the show on your favorite podcast app. Thanks!  Host and Producer: Erin O'Toole Executive Producer: Brad Turner  Theme music by Robbie Reverb Additional music by Blue Dot Sessions In The NoCo is a production of KUNC News and Community Radio for Northern Colorado.

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Why fireflies shine their lights at the same time – and why it might lead to new technologies

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This episode was published on May 14, 2026.

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Fireflies lighting up the sky on a summer night can feel magical – especially if you happen to catch them as they light up at the same time. Which brings up one of the mysteries of the insect world: How do fireflies shine their lights in sync with...

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