Photo: The New England Aquarium The famous Christmas tree in Rockefeller Center made headlines when it got an eco-friendly makeover in 2007, replacing its conventional lights with 30,000 LEDs. But that’s not enough to make it the world’s most eco-friendly tree: From Lima to Copenhagen and Barcelona to Pittsburgh, cities around the world have gone to extreme — and downright wacky — lengths to celebrate sustainability while marking the start of the holiday season…. Read the full story on TreeHugger
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From Eels to Kisses: 6 Wacky Ways Cities are Lighting Up Christmas Trees