Darin McNeil of the University of Kentucky co-authored a study on the U.S. firefly population. It turns out the number of fireflies you see depends on two important factors.

PFEIFFER: McNeil examined data from 24,000 surveys of firefly activity conducted by lightning bug lovers across the country. MCNEIL: So if you have a bad year for fireflies, it may not actually be ...

Fireflies can make a walk on a summer night seem magical. But in some parts of the country, those blinking lights in the sky have dwindled. DARIN MCNEIL: Maybe you see 10. Maybe you see five. Maybe ...

Health & Science Firefly numbers have fallen in some parts of the U.S., study finds By Hosts Published July 23, 2025 at 3:58 AM CDT ...

Firefly numbers have fallen in some parts of the U.S., study finds By Hosts Published July 23, 2025 at 4:58 AM EDT ...