John Holdren

John Paul Holdren (born March 1, 1944) is an American scientist who served as 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).

Holdren was previously the Teresa and John Heinz Professor of Environmental Policy at the Kennedy School of Government at Harvard University, director of the Science, Technology, and Public Policy Program at the School's Belfer Center for Science and International Affairs, and director of the Woods Hole Research Center.

Holdren was born in Sewickley, Pennsylvania and grew up in San Mateo, California.

He trained in aeronautics, astronautics and plasma physics and earned a bachelor's degree from the Massachusetts Institute of Technology in 1965 and a Ph.D. from Stanford University in 1970 supervised by Oscar Buneman.

Holdren taught at Harvard for 13 years and at the University of California, Berkeley for more than two decades.

His work has focused on the causes and consequences of global environmental change, population control, energy technologies and policies, ways to reduce the dangers from nuclear weapons and materials, and science and technology policy.

He has also taken measures to contextualize the United States' current energy challenge, noting the role that nuclear energy could play.

In a 1969 article, Holdren and co-author Paul R. Ehrlich argued, "if the population control measures are not initiated immediately, and effectively, all the technology man can bring to bear will not fend off the misery to come."

Other early publications include Energy (1971), Human Ecology (1973), Energy in Transition (1980), Earth and the Human Future (1986), Strategic Defenses and the Future of the Arms Race (1987), Building Global Security Through Cooperation (1990), and Conversion of Military R&D (1998).

Holdren also authored over 200 articles and papers and has co-authored and co-edited some 20 books and book-length reports including:

Holdren lives in Falmouth, Massachusetts, with his wife, biologist Cheryl E. Holdren (formerly Cheryl Lea Edgar), with whom he has two children and five grandchildren.

In 1973, Holdren encouraged a decline in fertility to well below replacement in the United States, because "210 million now is too many and 280 million in 2040 is likely to be much too many."

Holdren was involved in the famous Simon–Ehrlich wager in 1980.

In 1981, Holdren was awarded a MacArthur Fellowship (informally known as the "genius award") for his efforts to promote world peace through energy management.

Holdren was chair of the Executive Committee of the Pugwash Conferences on Science and World Affairs from 1987 until 1997 and delivered the Nobel Peace Prize acceptance lecture on behalf of Pugwash Conferences in December 1995.

He, along with two other scientists helped Paul R. Ehrlich establish the bet with Julian Simon, in which they bet that the price of five key metals would be higher in 1990.

The bet was centered around a disagreement concerning the future scarcity of resources in an increasingly polluted and heavily populated world.

Ehrlich and Holdren lost the bet, when the price of metals had decreased by 1990.

From 1993 until 2003, he was chair of the Committee on International Security and Arms Control of the National Academy of Sciences, and co-chairman of the bipartisan National Committee on Energy Policy from 2002 until 2007.

Holdren served as one of President Bill Clinton's science advisors (PCAST) from 1994 to 2001.

Holdren was elected a member of the National Academy of Engineering (2000) for articulation of energy environmental and proliferation issues.

Holdren was elected President of the American Association for the Advancement of Science (AAAS) (2006–2007), and served as board Chairman (2007–2008).

He was the founding chair of the advisory board for Innovations, a quarterly journal about entrepreneurial solutions to global challenges published by MIT Press, and has written and lectured extensively on the topic of global warming.

Eight years later, President Barack Obama nominated Holdren for the position of science advisor and director of the Office of Science and Technology Policy in December 2008, and he was confirmed on March 19, 2009, by a unanimous vote in the Senate.

He testified to the nomination committee that he does not believe that government should have a role in determining optimal population size and that he never endorsed forced sterilization.

Overpopulation was an early concern and interest.

(The population of the US was 327.2 million in 2018.) In 1977, Paul R. Ehrlich, Anne H. Ehrlich, and Holdren co-authored the textbook Ecoscience: Population, Resources, Environment.