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RT @ruthhhopkins: Keystone XL carbon emissions will be 20% higher than previously thought #nokxl insideclimatenews.org/news/04042017/tar-sands-greenhouse-gas-emissions-climate-change-keystone-xl-pipeline-donald-trump-enbridge?utm_content=bufferd06bf&utm_medium=social&utm_source=twitter.com&utm_campaign=buffer