Baseball players in Catlettsburg soon will enjoy playing under bright new lights. Mayor Faith Day said that a near $200,000 ...

After passing a Dark Sky ordinance to curb light pollution and save energy, Pittsburgh is installing adjustable streetlights.

When the court lights flicker on at the U.S. Open, tennis stars shine under illumination designed to cut light pollution. The ...

It’s a common story. Artificial light emanating upward into the night sky creates skyglow. That glow is increasingly erasing stars from human view in North America.