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Light therapy may help improve symptoms of depression by aligning your body’s natural clock, balancing serotonin levels, and stabilizing sleep patterns. Typical light therapy involves sitting near a ...

Humans have been studying and playing with light for millennia — from the ancient civilizations using rock crystals to magnify objects and focus sunlight to ignite fires, to Galileo who sparked the ...

Light stress refers to the detrimental effect that exposure to insufficient or excess levels of light can have on plant function and development. Whereas exposure to insufficient light limits ...

The chair of DarkSky UK says special lights growing turf at football grounds can harm human health. Some money will be used for tilted benches on the Northumberland coast for a better night-sky view.