Photuris pensylvanica — better known as the Pennsylvania firefly or, as most Philadelphians call it, the lightning bug — is ...

This summer has been a good year for viewing lightning bugs or fireflies because of several weather conditions. Here's what ...

The flickering fields of summer nights are back. Fireflies, it seems, are abundant again. Throughout the region, people are ...

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

Since the solstice occurs so late at night Philly time, is the longest day the 20th or the 21st? The answer: Both. The interval between sunrises and sunsets on Friday and Saturday is just under 15 ...

There are more than 40 species of fireflies in Missouri, but for the last few years people have been concerned about the ...