INDIANA, USA — Lightning bugs started flying around a bit earlier this year thanks to our wetter and warmer spring overall! Peak season may a bit earlier than normal this year. Or are they fireflies?

KELLETTVILLE, Pa. ― Every year in late June, Peggy Butler and her husband, Ken, welcome visitors to rural northwestern Pennsylvania for the chance to glimpse the rare and beguiling Photinus carolinus.

Launched in 2013, the annual event has become so popular that the Butlers had to institute a lottery system to protect the fireflies that visitors so desperately wanted to see. This year, 2,500 people ...

Fireflies can be found near Florida's wetlands and springs during late spring and summer. Over 50 species of fireflies exist in Florida, inhabiting diverse environments from mangroves to urban parks.