Why do fireflies only come out in the summer? Since fireflies are cold-blooded they thrive in warm, humid weather, the Fa rmer’s Almanac reports.

Fireflies used to light up the summer, but now habitat loss, pesticides and light pollution threaten lightning bugs with extinction.

Experts say habitat loss and light pollution are making it harder for the glowing beetles to thrive. Here’s what you can do ...

Fireflies (or lightning bugs) perform their light show almost every night over the summer. What to know about the popular summer beetles.

Despite the name, fireflies are beetles — not flies. They live in tropical and temperate regions, like Pennsylvania, and produce a glowing light thanks to a chemical reaction in their abdomen.

Fireflies are declining, what you can do to save these tiny wonders Fireflies are dying, and a recent study found that we may be the last generation to see them light-up in certain areas.

Fireflies have seen a resurgence in New England due to ideal weather conditions, but there is a lack of data on their history and how to protect them, though 14 species live in New Hampshire and none ...