Tag: Allegheny National Forest

This article was originally published in bioGraphic.

One dusky June evening, two days before the 2022 Pennsylvania Firefly Festival, the biologist Sarah Lower sat on a back porch, watching the sky for a specific gradation of twilight. A group of Lower’s students from Bucknell University hung around her, armed with butterfly nets and stopwatches for counting the time between firefly flashes—a way to differentiate between the multiple lightning-bug species that live here at the edge of Pennsylvania’s Allegheny National