The UN Conference on Biodiversity, COP16, which was canceled at the weekend, also casts its shadow over COP29. On the one hand, the conference in Cali, Colombia, emphasized the close link between climate and species extinction. On the other hand, the delegations were unable to agree on the details of financing until the plenary was no longer quorate and the meeting had to be ended – not a good omen for the climate conference in Baku.