Daniele Visioni, an assistant professor at Cornell specializing in climate intervention, and Holly Jean Buck, a sustainability expert from Harvard, join the discussion. They explore the concept of geoengineering, debating the feasibility of creating an atmospheric sun shield to combat global warming. The conversation dives into the science behind stratospheric aerosols, their environmental impacts, and ethical considerations. Visioni and Buck emphasize the need for global governance and collaboration in addressing climate change challenges while navigating the complex interplay of technology and society.