metamorworks/Shutterstock Save for later Print Download Share LinkedIn Twitter The idea of engineering the climate has been around for many years. But it is usually dismissed as arguable craziness, whether this applies to technical challenges such as those implied by sending giant mirrors into space, or to security or scientific unknowns involved with spreading matter in the atmosphere. However, as the world remains off track to limiting global warming to 1.5°C, geoengineering has recently seen a surge in momentum — notably in the US — by government agencies, business magnates and academic institutions.
