A synchronous firefly event in Tennessee's Great Smoky Mountains National Park. Photinus carolinus fireflies annually flash in sync during late May or early June. The insects are still in trouble, but ...
Fireflies can make a walk on a summer night seem magical. But in some parts of the country, those blinking lights in the sky have dwindled. DARIN MCNEIL: Maybe you see 10. Maybe you see five. Maybe ...
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