In ten or twenty years, we will have no other choice: we will have to dim the sun. But this cannot be the responsibility of individual states or companies. Humanity is not managing to transition away from fossil fuels quickly enough. The goal of the Paris Agreement to limit global warming to a maximum of 2 degrees Celsius is becoming increasingly unattainable. For billions of people, especially in the Global South, this means a struggle for survival. Soon, the only choice will be between increasing suffering from climate consequences and solar geoengineering. This involves artificially cooling the Earth by reflecting sunlight in the atmosphere. This technical interim solution buys the necessary time to decarbonize the economy and generate enough green energy to remove the CO2 from the atmosphere that has caused the warming.

Renowned science author Thomas Ramge believes it is high time to research, discuss, and formulate an international plan for the responsible use of geoengineering that prevents individual states, tech billionaires, or companies from rushing ahead. His book breaks the taboo surrounding the artificial dimming of sunlight and aims to initiate a constructive political debate on how to successfully transition to a post-fossil age.