It's a lovely summer weekend morning. We relax in our living room with the sunlight coming gently through the windows. We glance outside and can see the green leaves and watch birds in the yard. We ...

We explore if there is a true connection between light and gravity. We know that gravity exerts its pull on light, and we have an explanation for why. Actually, we have multiple explanations that all ...

Blue light is a specific kind of light with a short wavelength. This type of light is emitted from your computer screen, your mobile device, your flat-screen television, and many other devices that ...

Do you ever think about what staring at screens does to our eyes all day? Harvard Health Publishing investigated blue light and its effects on our sleep and health. Our eyes are continually taking in ...

Do blue light glasses really work? An optometrist shares the science behind the trending glasses and who they may be ...

What Is Therapeutic Light Therapy? Therapeutic light therapy, also called phototherapy, is a form of treatment for certain types of depression, sleep disorders, and other conditions. It involves ...

Under the sea ice during the Arctic’s pitch-black polar night, cells power photosynthesis on the lowest light levels ever observed in nature. Most of life’s engines run on sunlight. Photons filter ...