Many fireflies are appearing this summer in the northeastern United States. People living in cities and neighborhoods can easily see their bright lights at night. Places like Central Park and Prospect Park in New York City have reported more fireflies than usual. Experts think the wet weather in spring helped fireflies grow. Fireflies, also called lightning bugs, flash their lights to talk to each other and find mates. Scientists believe the weather caused this increase, although there are no exact numbers. But fireflies still face many problems. Scientists say firefly numbers are dropping because they lose their homes, people use too many chemicals in gardens, and city lights are too bright. Bright lights from buildings and cars make it hard for fireflies to see each other’s flashes. Jessica Ware, a scientist from the American Museum of Natural History, said people must help protect fireflies. She suggested using fewer chemicals and turning off unnecessary lights at night. Doing this can help fireflies survive. The return of many fireflies this summer reminds everyone that protecting nature is important.