John Holdren
Director, Office of Science and Technology Policy; Co-Chair, President's Council of Advisers on Science and Technology
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(Gerald Martineau/TWP)
Holdren is a powerhouse in the world of science and public policy. As director of the Office of Science and Technology Policy (OSTP) and co-Chair of the President's Council of Advisers on Science and Technology (PCAST), he is the top adviser to President Barack Obama on science and technology, issues that are increasingly relevant to homeland security, energy and the environment. Holdren casts all of the above as priorities.
But some have criticized the scientist, claiming that he lets his political ideology sway his scientific convictions. Holdren is an outspoken advocate of the need to reduce greenhouse gas emissions and believes the United States should sign the Comprehensive Nuclear Test-Ban Treaty. In a 2008 New York Times op-ed, Holdren called climate change skeptics "dangerous" members of a "denier fringe."
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