How fireflies light up the summer night sky

John Landecker

This long exposure picture taken on June 16, 2020 shows fireflies on trees at Tatsuno Hotarudoyo Park in Tatsuno in Nagano Prefecture. – The Tatsuno Firefly Festival, held annually in mid-June, was cancelled this year due to the COVID-19 coronavirus outbreak. (Photo by Philip FONG / AFP) (Photo by PHILIP FONG/AFP via Getty Images)

Whether you call them fireflies, lightning bugs or something completely different, we all know the glowing little beetles that shine bright in the summer night. Rebecca Fyffe of Landmark Pest Management joins John Landecker to share her deep knowledge of fireflies, including the 130+ species that populate North America and how light pollution is affecting their flashy mating ritual.

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