The Science in a Twinkle of Nighttime in the South

From the New York Times:

Scientists have for years been warning that the world’s estimated 2,000 species of fireflies are dwindling, partly because expanding cities are altering water flow patterns and yielding more light pollution, which researchers say can hamper the mating rituals of the insects.
“Fireflies are indicators of the health of the environment and are declining across the world as a result of degradation and loss of suitable habitat, pollution of river systems, increased use of pesticides in agro-ecosystems and increased light pollution in areas of human habitation,” according to the Selangor Declaration, named for the Malaysian site of a 2010 symposium about fireflies. “The decline of fireflies is a cause for concern and reflects the global trend of increasing biodiversity loss.”