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Everyone is beginning to realize that modern lighting systems have real effects on human biology. Light is not just something we see with. It is a signal the nervous system uses to regulate attention, energy, sleep, and behavior. When that signal is altered, the body responds, whether we are aware of it or not. This footage comes from a 1976 study by John Ott that examined how fluorescent lighting influenced hyperactivity and learning behavior in children. Even then, changes in lighting produced