Who will step up at Cop26? Are wealthier nations, including the UK, more talk than action on the climate crisis? For many experts, something needs to change in Glasgow. Here, climate activist Greta Thunberg argues that, as the climate clock keeps ticking and emissions keep growing, a real climate leader who would be vital to setting about affective change is yet to emerge. Who will take the first decisive steps forward to create the serious change needed to combat the climate emergency?