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David has not yet contributed to any Proposals.Proposal Links
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Reversing climate change via a universal price paid to remove atmospheric CO2 | Sep 10, 2017 |
Activities
David Perk is supporting proposal Reversing climate change via a universal price paid to remove atmospheric CO2 | Sep 10, 2017 |
David Perk joined the Climate CoLab community | Aug 4, 2015 |