“We are engaged in an unprecedented experiment.” Scientist Michael Mann on 400ppm
Published On: June 28, 2013
Washington, DC, leading climate scientist Michael Mann of the University of Pennsylvania sat down with Climate Desk Live
About the significance of an planetary milestone—we’ve reached 400 parts per million of carbon dioxide in the atmosphere.
Tags: Carbon Dioxide, Chris Mooney, Climate Change, Climate Desk, Michael Mann, Video(2023)
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