A familiar, sporadic glow is dotting the night sky around the nation’s capital as fireflies return in force for the summer months.
Experts said the lightning bugs filling the Washington area — from Rock Creek Park to the suburbs of Virginia and Maryland — are the result of a favorable climate in the months leading up to the warm season.
Now, with the region drenched in its reliably high humidity, fireflies have the ideal dance floor for their evening routine. Researchers are taking notice…