World leaders head to Glasgow for COP26 as G20 wraps up

World leaders made a climate pledge on coal and recognized the importance of reaching carbon neutrality ‘by or around mid-century’ on the final day of the G20 summit in Rome. Meanwhile, the United Nations’ climate summit COP26 officially began in Glasgow, Scotland amid dire warnings by scientists on the time left to cap global warming to 1.5 celsius. New York Times reporter Somini Sengupta joins.