San Francisco landmarks go dark for "Earth Hour"

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San Francisco landmarks go dark for "Earth Hour"

San Francisco landmarks go dark for "Earth Hour"
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San Francisco landmarks go dark for "Earth Hour"

by KGO – San Francisco 1:35 mins

San Francisco landmarks go dark for "Earth Hour"

by KGO – San Francisco 1:35 mins

San Francisco landmarks went dark Saturday night, joining cities around the world in the annual "Earth Hour" event.

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