This analysis has been done in terms of the 1.5°C temperature limit. This objective is extremely demanding, but we have no choice.As the IPCC made clear in Global Warming of 1.5°C, more than 1.5°C degrees of warming would yield immeasurable suffering and destruction (and impacts will be severe even at 1.5). It is crucial to recognize the basic truth of our predicament: 1.5°C can only be reached within an emergency global mobilization, which can only come together if it prioritizes justice just as much as ambition.