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Eco-photos of the week: Sept. 12-18

An oil pump dips up and down at sunset on Sept. 13 in the desert oil fields of Sakhir, Bahrain.

Photo: Hasan Jamali/AP

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Bahraini oil pumps

An oil pump dips up and down at sunset on Sept. 13 in the desert oil fields of Sakhir, Bahrain.