Earth Hour 2011, in Pictures

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Rio de Janeiro, Copacabana. Photo source: ©© Alex de Carvalho

Excerpts;

At 8:30pm on Saturday 26 March 2011, landmarks across the world switched off their lights for one hour in a bid to highlight global climate change.

View 26 Photos Gallery, from Paris to Singapore: VIEW GALLERY, Guardian UK

Gathered here are an other series of before-and-after photographs from this year, which (starting with the second one below) will fade between “on” and “off” when clicked.
View Fading Photos Gallery: VIEW GALLERY, Boston Pictures