This week, David Keith, Professor of Public Policy at the Harvard Kennedy School, joins co-host Andrew Thompson for a discussion on the controversy, risks and potential benefits of climate geoengineering. Keith offers a background on solar geoengineering before addressing common criticisms — are proponents of geoengineering insane? He notes that while solar geoengineering doesn't fit into current preconceptions about how we manage climate change, a moderate solar geoengineering solution could be a powerful tool in slowing the effects of climate change while dramatic emission reductions can continue. Tune in for the full discussion to learn more about this fascinating topic.