A new book imagines the chaos that could unfold if a biological weapon were released — either accidentally or on purpose.This episode was produced in partnership with Vox's Future Perfect. It was produced by Avishay Artsy, edited by Miranda Kennedy with help from Jolie Myers, fact-checked by Gabriel Dunatov, engineered by Patrick Boyd and David Tatasciore, and hosted by Noel King. A person wearing an orange protective suit and a gas mask is seen at an event to promote the German government's new initiative to strengthen civil defence nationwide. Photo by Maryam Majd/Getty Images.Listen to Today, Explained ad-free by becoming a Vox Member: vox.com/members. New Vox members get $20 off their membership right now. Transcript at ⁠vox.com/today-explained-podcast.⁠ Learn more about your ad choices. Visit podcastchoices.com/adchoices