There are 365 days in a year, but some may be one of a kind, and in D.C., Friday seemed one of those unique days, and not just because it was the first full day of spring. The equinox, which in theory ...

As daylight diminishes people can feel their mood dimming. Experts say starting light therapy in the fall can help fend off winter depression. As the days get shorter, many people may also find their ...

Sweet springtime: The birds start chirping again, the days warm up, and the skies are brighter and longer. The hibernation of winter ends, and seasonal depression begins to lift. Spring fever is in ...

Bright light might be the solution to getting a good night's sleep, researchers have found. Exposure to bright light has been previously found to help treat symptoms of depression, and this might be ...

After examining 13 million hours of light exposure data, researchers found that experiencing bright light during the dark hours can significantly increase the risk of heart failure and heart attack.