Here’s what every degree of heat rise could do to the global economy

Even the most promising solutions to climate change often run smack into the challenge of how to pay for them. As the United Nations' COP26 summit kicks off in Scotland on Sunday, questions about whether poorer countries can afford to reduce their emissions for the global good and whether richer countries — which account for the vast majority of the world's carbon emissions — are doing enough to help them are expected to take center stage.