A big reason for your mood is the high-intensity blue light coming from the sun. Among the visible light spectrum, ... But too much of it may keep you awake when your body needs to wind down.

President Donald Trump suggested Thursday that scientists and other experts investigate whether there's a way to inject disinfectant, light, or heat into the human body to kill the coronavirus.

Blue light is good for your body during the day, but exposure to blue light at night can cause mild to more severe health effects. Business Insider Subscribe Newsletters ...

Lots of phone and tablet apps promise to improve sleep by filtering out the blue light from device screens. But that won't help if the reason you're not getting enough shut-eye is caffeine or stress.

When artificial light is added to a human's day, the body's natural rhythms become confused. ... Fluorescent and LEDs bulbs create a two-fold problem when it comes to sleep. First, ...