Steven A. Cohen

Columbia University

Guest

Executive Director of Columbia University's Earth Institute and Professor in the Practice of Public Affairs at Columbia University's School of International and Public Affairs

Steven A. Cohen on KCRW

This year's global temperatures will have been the highest since records began in 1880.

Cause for Optimism at the UN Climate Talks in Lima, Peru?

This year's global temperatures will have been the highest since records began in 1880.

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