Our smartphones, computer screens, televisions, the fluorescent lights in the office, and the sun all emit blue light. And experts want you to know that yes, exposure to blue light does affect sleep.

Add Yahoo as a preferred source to see more of our stories on Google. Many Americans spend more than seven hours in front of screens daily, which can affect your skin. (Getty Images) (d3sign via Getty ...

ABC News' Dr. Darien Sutton explains how blue light impacts your performance and overall well-being. Did Aaron Rodgers just finish his NFL career with pick 6? He explained how he'll make retirement ...

Blue light is a high-energy light that the eyes absorb from computers, smartphones, LED lights, and fluorescent lights. The sun is the biggest source of blue light. On a sunny day, it's 100,000 times ...

You probably do your best to protect your skin from ultraviolet rays by slathering on sunscreen before going outside (and if you haven’t been, now’s a good time to start). But many people aren’t aware ...