“The push to turn down the lights in American cities is gaining broad support from several unlikely allies — from conservationists and builders to city planners and the military.
Dark-sky legislation — laws requiring such measures as shielding outdoor lighting to reduce light pollution — has been embraced by about 300 counties, cities and towns.
More than 50 state bills have been introduced in the past two years, and seven were enacted. Eighteen states —Arizona, Arkansas, California, Colorado, Connecticut, Hawaii, Maine, Minnesota, Missouri, New Hampshire, New Mexico, New York, Oklahoma, Rhode Island, Texas, Vermont, Virginia and Wyoming — have adopted dark-sky legislation….”