National Science Environment Several Cities Convert To LED Street Lights In Conservation Efforts 4:41pm November 21, 2016 by Grace Hood U.S. Around the Nation Science Environment Energy Share URL copied to clipboard! Copyright 2016 NPR. To see more, visit http://www.npr.org/. 300x250 Ad More All Things Considered Health & Safety National Impossible, you say? Try asking a toddler National Poll: In tight race, voters split on whether Harris intends to carry out her promises 300x250 Ad Support quality journalism, like the story above, with your gift right now. Donate
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