BusinessWeek once described John Elkington as a “dean of the corporate responsibility movement for 3 decades.” Indeed: John is the founder of three companies focused on CSR and sustainability, the author of 17 books, and a regular contributor to major publications such as CSRWire and Guardian Sustainable Business. Lucky for us, he agreed to star in this week’s #CSRchat where he shared insights from his decades of experience and discussed his new book The Zeronauts: Breaking the Sustainability Barrier.