Energy
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drastic measuresPolice discussed stopping Keystone XL protesters ‘by any means’
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in on itExxon knew — and so did coal
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mirror mirror on the groundThis company wants to make steel and cement with solar power. Here’s how.
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PANEL DISCUSSIONRepublicans are buying rooftop solar. Will it change their politics?
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winds of deadly pollutionYour state’s air pollution might be coming from another state’s power plants
