Featured series 
Tag: Steven Lockley
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Health
Researchers discover second light-sensing system in human eye
New research on blind subjects has bolstered evidence that the human eye has two separate light-sensing systems — one that perceives the familiar visual signals that allow us to see…
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Campus & Community
When the blues keep you awake
Your eyes do more than see. Researchers at Harvard Medical School demonstrated this by showing that your eyes are part of a light reception system that can keep you alert…
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Science & Tech
Blue light special
Jet-setters and shift workers now sit in front of glaring white lights to readjust their body rhythms and avoid sleep and alertness problems. New experiments condcuted by Harvard University researchers…