What happens at a firefly festival?

In the Allegheny National Forest, love is lighting up the night. The forest hosts at least 15 species of fireflies, all of which spark in the dark this time of year. These lightning bugs will be the stars of the 14th Annual Pennsylvania Firefly Festival in Tionesta, Pa., on June 26 and 27. The festival’s guided nocturnal sightings are already booked up, but there’ll be free daytime nature exhibits, music and other happenings in honor of fireflies.