SIS agent turned freshwater champion Mike Joy

Freshwater ecologist Mike Joy is a controversial figure who says things some people don't want to hear. He came to academia late, after time spent as a mechanic, milkman, truck driver, agent with the New Zealand Security Intelligence Service, and farm hand. Mike's now written a book about his life, and the research that has turned him into an environmental activist. He joins Susie to talk about The Fight for Fresh Water.