Holly Jean Buck has emerged in recent years as one of the most incisive voices on the left on climate change, notably with After Geoengineering (2019), along with a range of academic and popular articles. Her recent book, Ending Fossil Fuels: Why Net Zero Is Not Enough (2021) is another valuable contribution, confronting realities, facing difficult questions and drawing out serious, grounded political conclusions that take the struggle forward. Fossil fuel realities