The Eiffel Tower in Paris is shown just before its 20,000 bulbs went out for five minutes at 7:55 p.m. on Feb. 1, 2007. The City of Light went dim when thousands of Parisians joined in the "lights-out" campaign aimed at showing citizen concern over climate change. Several European cities also staged the symbolic blackouts.
(Photo: AP Photo/Michel Euler)
Share This Gallery
