Joshua Schwarz explains how dispersing ice nucleating particles in one tiny region of the tropical tropopause layer off Northern Australia can address around 1pc of global warming. He also discusses his involvement in the SABRE stratospheric flights. Paper: Considering intentional stratospheric dehydration for climate benefitsDOI: 10.1126/sciadv.adk0593

Other papers discussedPyrocumulonimbus affect average stratospheric aerosol compositionJ. M. KATICH DOI: 10.1126/science.add3101

Marine-cloud brightening: an airborne conceptChristian Claudel, Andrew John Lockley, Fabian Hoffmann and Younan XiaDOI 10.1088/2515-7620/ad2f71