A new study gives people yet another reason to turn off that screen at night. A year ago, psychologists at Ohio State University found that the bright fluorescent glare of city lights at night can ...

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 ...

Researchers have discovered that people exposed to brighter light at night face up to 50% higher risks of heart disease, while daytime light may protect the heart by reinforcing healthy circadian ...