Humans are more sensitive to evening light than previously thought, with large differences in sensitivity across individuals, a study suggests. Exposure to light after dusk is pervasive in the modern ...

Think afternoon sunlight helps teens wind down at night? New research shows it can actually disrupt their melatonin and delay sleep, suggesting school schedules, not just screen time, may be the key ...

You’ve probably heard the saying, “the early bird gets the worm,” used to reference people with an affinity for morning productivity. The phrase originates from our feathered neighbors who are often ...

Most people know blue light before bed disrupts sleep. Far fewer know there’s an entire daily light protocol that sleep researchers follow to keep their internal clocks dialed in, and that morning ...

A new scientific study shows that bright electric light exposure of preschool children in the evening suppresses melatonin production almost completely, an important addition to the growing body of ...

In the spring, later sunset and extended daylight exposure delay bedtimes in teenagers, according to new research. In the spring, later sunset and extended daylight exposure delay bedtimes in ...