I am a 69-year-old woman with a long-standing snoring problem. I've spoken to doctors about it to no avail. I get embarrassed ...

Lack of sleep doesn’t just make you tired, it can damage your eyes too. An expert explains how poor sleep affects vision, from dryness to blurry sight.

Excitons—bound pairs of electrons and an electron hole—are quasiparticles that can arise in solids. While so-called "bright" ...