Daniel Kammen

Daniel Merson Kammen (born 1962) is an American scientist, renewable energy expert, and former government figure. Since July 1, 2025, he has been a Bloomberg Distinguished Professor at the Johns Hopkins University . Before joining Hopkins, he fully retired from the University of California, Berkeley where he was the Distinguished Professor of Energy in the Energy and Resources Group .

Kammen is noted as a coordinating lead author for the Intergovernmental Panel on Climate Change, which won the 2007 Nobel Peace Prize for their report, Climate Change 2007, assessing man-made global warming. In 1998, Kammen was elected a permanent fellow of the African Academy of Sciences, and in 2007 received the Distinguished Citizen Award from the Commonwealth Club of California. Kammen was elected a member of the National Academy of Sciences in 2025.