Regulating Light Pollution

"Harvard is one of a growing number of communities in Massachusetts enforcing rules to stop the "light pollution" that is running rampant across much of the state. Tired of all the glare and the wasted energy from beaming light into the sky, towns from Plymouth to Townsend are requiring outdoor lights to be equipped with shields so they only shine down where the people are. Now, a group of astronomers, homeowners, outdoorsmen, and starry sky lovers believe this may be the year the Legislature finally passes a law requiring new state-funded lights to have the glare-reducing shields. It's their ninth try, but they say the evidence has never been stronger: The law would cost no money, save energy, cut road glare, and allow people to better see the stars that have inspired everything from religion to navigation."

Thanks to Christian Peralta