Five years since the Paris Agreement came to fruition, Paul Watkinson talks to "C2GTalk" to provide some personal reactions, drawing on his long experience of climate action, about what comes next. How and when do we start thinking about the large-scale of carbon dioxide removal that may be needed to meet the Paris Agreement goal of limiting warming to well below 1.5°C compared to pre-industrial levels? What multilateral approaches might the world need to govern solar radiation modification?