Award-winning author and Bozeman resident David Quammen’s latest book “Spillover: Animal Infections and the Next Human Pandemic” traces the history – and possible future – of deadly diseases around the world. Quammen traveled numerous countries, including the U.S., China and Africa, interviewing researchers, victims and survivors of some of the planet’s deadliest diseases. His book has been called “a masterpiece of science reporting.” In tonight’s feature interview, Quammen talks with News Director Sally Mauk about why he wanted to write the book – and what he discovered…