"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." People who were exposed to higher levels of artificial light at night had higher brain stress activity, ...

STATEN ISLAND, N.Y. -- James Collins, a 29-year-old hospital administrator from Travis, couldn’t understand what was causing his chronic fatigue. “Even just sitting down on the couch was a no-go,” he ...

While most people think that flipping the switch on the overhead lights in their bedrooms is enough to darken their sleep spaces adequately, many fail to consider other ambient light sources. Whether ...