Minuscule silicon wafers propelled by lasers could be used to steer light sails, helping them travel beyond the solar system ...

How do plants use sunlight to make their own food? We use light for more than just to see. We can use light’s energy to make electricity, clean water, even dry our clothes. Plants use sunlight to make ...

Red-light therapy promises to treat everything from acne and hair loss to depression and chronic pain. Many of these claims ...

Most sleep advice misses the biggest factor. Here's the daily circadian lighting schedule sleep doctors follow for better ...

Anyone who wants to produce medication, plastics or fertilizer using conventional methods needs heat for chemical reactions -- but not so with photochemistry, where light provides the energy. The ...

Chemists have discovered a way to use visible light to synthesize a class of compounds particularly well suited for use in pharmaceuticals. The class of compounds, called azetidines, had been ...

Most people use red light therapy 2-5 times a week for 10-20 minutes. You can use red light therapy to increase melatonin and improve your sleep. Do not use red light therapy for longer than 30 ...