Since the 1980s, Helen Caldicott - whom Meryl Streep has called my inspiration to speak out - has worked tirelessly for a safe, sustainable, nuclear-free planet. Now she has edited Loving This Planet, which offers an accessible overview of the chief environmental and social issues of our times and includes captivating interviews with 25 contributors, including Lester Brown of the Earth Policy Institute, Denis Hayes (coordinator of Earth Day), David Krieger of the Nuclear Age Peace Foundation and many, many more.