Canada needs to reduce its greenhouse gas emissions by 50% to prevent a catastrophic 1.5 degree increase in the earth's average temperature -- assumed by many scientists to be a critical "danger line" for the planet and human life as we know it. It's 2020, and Canada is not on track to meet our targets. To do so, we'll need radical systemic change to how we live and work--and fast. How can we ever achieve this? Top policy analyst and author Seth Klein reveals we can do it now because we've done it before. During the Second World War, Canadian citizens and government remade the economy by retooling factories, transforming their workforce, and making the war effort a common cause for all Canadians to contribute to. Klein demonstrates how wartime thinking and community efforts can be repurposed today for Canada's own Green New Deal. He shares how we can create jobs and reduce inequality while tackling our climate obligations for a climate neutral--or even climate zero--future. From enlisting broad public support for new economic models, to job creation through investment in green infrastructure, Klein shows us a bold, practical policy plan for Canada's sustainable future. More than this: A Good War offers a remarkably hopeful message for how we can meet the defining challenge of our lives.