At the Research Dialogues session of the UNFCCC meetings SB56 in Bonn last week, IPCC SROCC Lead Author Rob DeConto gave a presentation explaining the science behind the “red dotted line” on potentially extreme sea level rise, in a key sea-level rise figure from the IPCC AR 6 Working Group I report. Under a high emissions scenario, if these new modeling studies are correct Antarctica might contribute up to 5 meters of sea-level rise by 2150, with rates approaching 5 centimeters per year — well beyond the limits of adaptation for many coastal communities, including the Nile Delta region of COP27 host Egypt. In this press conference, Dr. DeConto, University of Massachusetts-Amherst, repeats much of his noted Research Dialogues presentation.