A “smart, honest, and down-to-earth” (Elizabeth Kolbert) citizen’s guide to the seven urgent changes that will really make a difference for our climate.If you think the only thing you can do to combat climate change is to install a smart thermostat or cook plant-based meat, you’re thinking too small. In The Big Fix, energy policy advisor Hal Harvey and longtime New York Times reporter Justin Gillis offer a new, hopeful way to engage with one of the greatest problems of our ag