Many people are terrified at the prospect of Donald Trump’s tiny fingers on America’s nuclear weapons button. Another terror in our backyards: the nation’s biological research labs, which handle deadly pathogens like ebola, anthrax and others. We discuss the potential for global disasters with Professor Kennett Benedict of the Bulletin of the Atomic Scientists, and with journalist Alison Young, who has investigated US biolabs for USA Today for more than a decade.