Fireflies, courtesy of L-ines (Flickr)

Fireflies, courtesy of L-ines (Flickr)

The reason there are so many fireflies in DC this summer? Too much rain, says WaPo: “This is firefly season in Washington, the best and brightest in several years. Scientists say a wet spring has made a lightning-bug-friendly region even more so, and hordes of the insects are now spending the last days of their lives floating over lawns and blinking in treetops.” Ah, mystery solved. Glad that wet weather led to something pleasant.