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Eco-photos of the week: Jan. 16-22

A ring-tailed lemur jumps around in its pen at the Chengdu Zoo in Chengdu, Sichuan Province, China on Jan. 18.

Photo: ZUMA Press

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Staying warm

A ring-tailed lemur jumps around in its pen, which was recently equipped with a space heater for the winter at the Chengdu Zoo in China's Sichuan province on Jan. 18.