Paris's famed Avenue des Champs-Ã?lysées is all lit up for the holiday season. Rings of lights adorn 200 hundred trees. The lights are programmed to cycle through 67 colors – from red and green to blue and ten shades of white. Now if that all sounds a bit excessive in these troubled times — well, don't fret. Organizers say a solar farm in southern France will "offset" all of the electricity needed to brighten up one of the world's most remarkable avenues. Marco Werman gets details from Koert Vermeulen, one of the lighting designers.

Champs Elysees, Paris (Photo: Benh Lieu Song/Wiki Commons)

Champs Elysees lights (Photo: James Tyndall)

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