(Before It's News)
Lighting is for so much more than just seeing
Biodynamic lighting is an artificial light source that replicates the dynamic variations of daylight and sunlight through a light management system.
Background
Up until recent times, it was believed that light was only needed for seeing. However, in 2001, American scientist, Brainard, discovered a circadian photoreceptor in the retina, that receives a specific quality and quantity of light, which sets the biological clock.*
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Every Day is Earth Day
Source:
http://www.riseearth.com/2015/09/what-is-biodynamic-light.html