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Keyword: artificiallight

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  • Perspective: Casting light on sleep deficiency

    05/24/2013 11:34:31 AM PDT · by neverdem · 14 replies
    Nature ^ | 22 May 2013 | Charles A. Czeisler
    There are many reasons why people get insufficient sleep in our 24/7 society, from early starts at work or school, or long commutes, to caffeine-rich food and drink. But the precipitating factor is an often unappreciated, technological breakthrough: the electric light. Without it, few people would use caffeine to stay awake at night. And light affects our circadian rhythms more powerfully than any drug. Just as the ear has two functions (hearing and balance), so too does the eye. First, rods and cones enable sight; and second, intrinsically photosensitive retinal ganglion cells (ipRGCs) containing the photopigment... --snip-- The US Institute...
  • Artificial light worries wildlife scientists who study nocturnal creatures

    03/03/2006 10:33:26 AM PST · by formercalifornian · 31 replies · 473+ views
    Orange County Register via KR ^ | Fri, Mar. 03, 2006
    SANTA ANA, Calif. - Mockingbirds sing all night long. Mountain lions take wide detours around the wildlife crossings they're supposed to be using. And two species of nocturnal snake slither quietly toward oblivion in the scrub lands of Orange County, Calif. The reason? The nights have grown far too bright. That's the message delivered powerfully in a new book, "Ecological Consequences of Artificial Night Lighting" - maybe not in Oprah's book club, but for many scientists trying to preserve native wildlife, a must-have. A product of four years' labor, the book pulls together the latest scientific findings on effects of...