The Story Behind f.lux, the Night Owl's Color-Shifting Sleep App of Choice | Motherboard

http://motherboard.vice.com/en_ca/read/the-story-behind-flux-the-night-owls-color-shifting-sleep-app-of-choice

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First saved: 2016-Jan-23 (Sat)
Last checked: 2016-Jan-23 (Sat), response 200