Exposure to bright light could affect your metabolism, reports a new Northwestern Medicine study.  

From their use in telecommunication to detecting hazardous chemicals, lasers play a major role in our everyday lives. They keep us connected, keep us safe, and allow us to explore the dark corners of the universe.

The promising new material molybdenum disulfide (MoS2) has an inherent issue that’s steeped in irony. The material’s greatest asset—its monolayer thickness—is also its biggest challenge.