It sends a very important signal to the rest of the world on one of the biggest problems we face, i think it is very important that The US demonstrates once again that The US will take the global climate change challenge seriously.

John Holdren

John Paul Holdren (born March 1, 1944) is the senior advisor to President Barack Obama on science and technology issues through his roles as Assistant to the President for Science and Technology, Director of the White House Office of Science and Technology Policy, and Co-Chair of the President’s Council of Advisors on Science and Technology (PCAST)

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