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01:01:54 Climate Change: How We Know It's Real and… Climate Change: How We Know It's Real and What It's Already Doing, Session 1	Climate Change: How We Know It's Real and What It's Already Doing, Session 1 pcamara climate atmosphere co2 carbon greenhouse change gases fuels bit dioxide earth percent things gas heat fossil question air carbon-14 concentrations From Ann Nikolai on April 1st, 2021 0 likes 18 plays 0