Grading Economics Textbooks on Climate Change

Since this "report card" is put out by Sightline Institute, which states that it's "mission is to make the Northwest a global model of sustainability—strong communities, a green economy, and a healthy environment," the worse the grade, the better the textbook is likely to be. Which means that Economics: Private and Public Choice by James D. Gwartney, Richard L. Stroup, Russell S. Sobel and David A. Macpherson is probably pretty good.