A light sleeper is a person who wakes up easily, even if there are only small changes in the environment. Being a light sleeper can make it more difficult to get a good night’s sleep because a person ...

What is blue light? “All the light we see is made up of different wavelengths of light,” says Vivienne Sinh Hau, MD, an ophthalmologist at Kaiser Permanente in Riverside, California. “Certain ...

You can get a brighter smile with a number of different whitening products and techniques available at home or at a dentist’s office. They vary in effectiveness (and price), but none of them provide ...

Have you noticed you're sleeping a little longer? Maybe you're experiencing a shift in appetite — craving more sweets or pasta. In autumn, our bodies sense the change in light as the dark winter ...

One night over drinks at a conference in San Jose, Miles Padgett, a physicist at Glasgow University in Scotland, was chatting with a colleague about whether or not they could make light go slower than ...

Light therapy can boost your mood, but you need the right model. Here's what experts say about picking an effective model. Corin Cesaric Editor Corin Cesaric is a Flex Editor at CNET. She received her ...

Light-years make measuring astronomical distances much more manageable. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Breaking space news, the ...

The lightbulb aisle can be a confusing place because over the past five years, a revolution has taken place in the lighting industry. The old energy-hogging incandescent lightbulb that dominated ...