This is an asbestos-level health crisis,” Dr. Glen Jeffrey said of research showing LED light exposure on human mitochondria.

Continuous exposure to artificial light at nighttime can put people at an increased risk of stroke, new research warns. “We advise people, especially those living in urban areas, to consider reducing ...

Researchers say the type of light students sit under all day may shape sleep, focus and hormones.

WASHINGTON (AP) — Every year, the night sky grows brighter, and the stars look dimmer. A new study that analyzes data from more than 50,000 amateur stargazers finds that artificial lighting is making ...

PITTSBURGH — Pittsburgh City Council approved $2.2 million for the first step into converting street lights to LED energy-efficient lights. ”Over 40% of city greenhouse gas emissions come from our ...