This podcast episode explores the concept of geoengineering as a potential solution to the urgent climate crisis. The focus is on marine cloud brightening, a technology that aims to manipulate clouds to make them more reflective and cool the atmosphere. The episode discusses the origins and first outdoor tests of this technology, highlighting the excitement and optimism of the scientists involved. It also delves into the risks and ethical concerns associated with geoengineering, emphasizing that it should not be seen as a substitute for reducing emissions. Despite the challenges, there is a belief in the capacity of innovation to address the climate crisis, but time is running out and quick action is needed.