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Gregory Jaczko

Gregory B. Jaczko (/ˈjɑːsk/; born October 29, 1970, Norristown, Pennsylvania) is a physicist who was chairman of the U.S. Nuclear Regulatory Commission (NRC) from 2005 to 2012.[2][3] While at the NRC, he voted against the opening of new nuclear plants; an inspector general report found that he sought unilaterally and improperly to block the Yucca Mountain nuclear waste repository project from advancing. After leaving the NRC, Jaczko called for a global ban on nuclear power.[4]

Gregory Jaczko

(1970-10-29) October 29, 1970
Norristown, Pennsylvania, U.S.

Early life and education[edit]

Gregory B. Jaczko was raised in Albany, New York,[5] the son of Kathryn Marie and Bela L. Jaczko.[6] He studied physics and philosophy at Cornell University in Ithaca, New York; he earned a bachelor in the two disciplines there in 1993.[5] In 1999, he earned a doctorate in theoretical particle physics from the University of Wisconsin–Madison.[5]


He is married to journalist Leigh Ann Caldwell.[7]

on C-SPAN

Appearances