The red and pink lights in the background are of visitors’ flashlights, covered with the red cellophane that rangers handed out to dim them. Bright, white lights disturb the lightning bugs and make ...

covered with the red cellophane that rangers handed out to dim them. Bright, white lights disturb the lightning bugs and make them go dark, Nichols said. Synchronous fireflies aren’t a rare or ...

When walking to a viewing spot visitors should: Cover flashlights with red cellophane or use flashlights with red light filters. Use flashlights only when walking to the viewing spot, and turn ...

When walking to a viewing spot visitors should: Cover flashlights with red cellophane or use flashlights with red light filters. Use flashlights only when walking to the viewing spot, and turn them ...