New Map Shows the Dark Side of Artificial Light at Night - Scientific American
▻https://www.scientificamerican.com/article/new-map-shows-the-dark-side-of-artificial-light-at-night
Beyond the obvious downsides of light pollution—such as grumbling astronomers or sea turtle hatchlings and migrating birds drawn off course by bright lights—most of its related effects are surprisingly hard to quantify. Researchers still lack deep understanding of the complex relationships between many nocturnal predators and prey, let alone how varying levels of artificial light changes them. For humans the effects are similarly muddled. Based on multiple epidemiological studies, the World Health Organization in 2007 and the American Medical Association in 2012 each issued statements warning that extended exposure to light at night increases the risk of certain cancers, probably via alterations to circadian rhythms and associated hormone levels. Even so, most of these studies did not distinguish between exposure to outdoor sources, like streetlights, and indoor ones, like television and smartphone screens.
▻https://seenthis.net/messages/647946
#éclairage #pollution_lumineuse #santé