You can’t escape the orange. That’s what travelers this summer have been reckoning with — swaths of tangerine, traffic cone and burnt sienna on maps indicating record high temperatures around the globe. Four concurrent heat domes from the southern United States to East Asia descended on millions — Phoenix residents enduring 31 days of 110-degree-plus temperatures. Italians in more than a dozen cities under extreme weather warnings. And in South Korea, at least 125 people were hospitalized for heat-related conditions at the World Scout Jamboree.