Eco global survival electric lights
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Light pollution, also known as photopollution, is the presence of anthropogenic light in the night environment.Īrtificial light that’s excessive, obtrusive and ultimately wasteful is called light pollution, and it directly influences how bright our night skies appear.
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Her analysis also revealed that while urban tree greening shifted notably earlier than rural tree greening under climate change, urban tree greening responded to climate change at a slower rate than rural trees did. 'The six-day difference was mainly caused by warmer urban temperatures, which averaged 1.3☌ higher than surrounding rural temperatures,' Meng said. She found spring green-up occurred six days earlier in urban areas compared to rural areas on average, largely due to warmer city temperatures. Using satellite data, Meng compared spring 'green-up dates' in urban versus rural areas in the 85 largest US cities for the period 2001 to 2014. 'We can use satellites to observe when plants turn green in spring across the globe.'
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'The timing of seasonal biological events – such as when trees leaf out, flowers open, and leaves turn yellow – is called phenology. 'Trees do not have watches or calendars, but they seem to know when spring arrives better than we do,' she said. The study was conducted by Lin Meng, a postdoctoral scholar at Lawrence Berkeley National Lab in Berkeley, California, who detailed her findings in the journal Science.