Nine countries, including North Korea, have nuclear weapons. What would happen if a nuclear bomb was dropped— say, in New York City? We talk to nuclear historian Dr. Alex Wellerstein, nuclear engineer Dr. Tetsuji Imanaka, and epidemiologist Dr. Eric Grant.

Check out our full transcript here. 

Selected readings:

• This comprehensive report on nuclear bombs
• Alex’s nuclear weapon simulation website
• Tetsuji’s paper calculating the radiation exposure of Hiroshima survivors
• This review of the Life Span Study of atomic bomb survivors
• This sobering report on nuclear winter

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This episode has been produced by Heather Rogers, Wendy Zukerman, our senior producer Kaitlyn Sawrey, Rose Rimler, and Shruti Ravindran, with help from Romilla Karnick. We’re edited by Blythe Terrell. Additional thoughts from Lulu Miller. Fact checking by Michelle Harris. Mix and sound design by Emma Munger. Music written by Bobby Lord and Emma Munger. Thanks for recording help from John Wild. For this episode we also spoke to Prof. Richard Wakeford, Dr. Richard Turco, Prof. Brian Toon, Prof. Alan Robock, Dr. Dale Preston, Dr. William Kennedy, Dr. Jonathan D. Pollack, and a bunch of other experts on North Korea and nuclear weapons. Thank you so much. Also, special thanks to Shigeko Sasamori and Kathleen Sullivan. An extra special thanks to the Zukerman family and Joseph Lavelle Wilson.