A scathing critique of proposals to geoengineer our way out of climate disaster, by the bestselling authors of Overshoot

The world is crossing the 1.5°C global warming limit, perhaps exceeding 2°C soon after. What is to be done when these boundaries, set by the Paris Agreement, have been passed? In the overshoot era, schemes proliferate for muscular adaptation or for new technologies to turn the heat down at a later date by removing CO2 from the air or blocking sunlight. Such technologies are by no means safe; they come with immense risks and provide an excuse for those who would prefer to avoid limiting emissions in the present. But do they also hold out some potential? Can the catastrophe be reversed, masked or simply adapted to once it is a fact? Or will any such roundabout measures simply make things worse?
The Long Heat: Climate Politics When It’s Too Late (Verso Books, 2025)maps the new front lines in the struggle for a liveable planet and insists on the climate revolution long overdue. In the end, no technology can absolve us of responsibility for our planet and each other.

Cody Skahan is a DPhil student at the University of Oxford as a recipient of a Grand Union ESRC doctoral training partnership. His work focuses on the intersections of people, the environment, and technology. Currently, he is focusing on the emergence of carbon capture and storage and carbon dioxide removal, as well as running a series of public engagement workshops across the UK and the Arctic around the topic of geoengineering.

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