When cool is too cool
As states, cities, and towns replaced their traffic signals with energy-efficient LED lights, they discovered an underappreciated feature of the old systems : the heat melted snow and ice.You can read...
View ArticleThe Hawthorne Effect is alive and well
Research shows that LED lighting generally improves working conditions in the office and on the shop floor. Control over the lighting, however, matters most.Read the rest on my blog post at All LED...
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