Due to chemicals, light pollution and other factors, fireflies are dwindling in numbers compared to a few decades ago.

Recent decades have seen fireflies become scarce in certain areas, and scientists warn that some have experienced concerning ...

Fireflies are harbingers of sweltering midsummer heat, but the regional renaissance is tied to conditions in the spring.

Philly's summer muggy weather is historic. We're seeing more fireflies around, so here's where to find lightning bugs, and a ...

Wisconsin Public Radio Kimberly Mackowski of West Allis recently took a walk at dusk through Wauwatosa’sForest Exploration ...

Firefly season peaks in July. Here’s where to spot them in and around Philadelphia — and why you may be seeing more of their ...

Photuris pensylvanica — better known as the Pennsylvania firefly or, as most Philadelphians call it, the lightning bug — is out in full force this summer. Reports that central and rural parts of the ...