How to recycle your Christmas tree

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Deadline looms for states to agree on Colorado River water cuts
02:09
Leaders at World Economic Forum to face reality of climate change on Swiss slopes
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Greta Thunberg detained while protesting German coal mine
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Miami's 'Harlem of the South' tries to heal from highway scars with green spaces
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City of Scottsdale cuts suburb off from water supply
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Greta Thunberg joins climate activists in condemned German village
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