In an open letter published on July 16 in Science, four MIT professors and nearly 70 additional scientific leaders called upon fellow researchers to urge U.S. government officials to halt plans to restart nuclear weapons testing. Corresponding author and professor of biology Jonathan King sat down to discuss the history of nuclear testing, his personal ties to the issue, and his responsibilities as a scientist. He also co-chairs the Nuclear Disarmament Working Group of Massachusetts Peace Action, MIT’s annual Reducing the Threat of Nuclear War conference, and the editorial board…