Daniel Merson Kammen 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 . .. more

Daniel Merson Kammen 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 .