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''Surging carbon dioxide levels have pushed greenhouse gases to record highs in the atmosphere, the has said.''

9IÖÆ×÷³§Ãâ·Ñ expert: Dr. Catherine Potvin - Department of Biology

Expertise: Climate change policies

catherine.potvin [at] mcgill.ca (·¡³¾²¹¾±±ôÌý)

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