What happens with U.S. hurricane and fire seasons drives the end-of-year statistics for total damage costs of weather disasters, said Ernst Rauch, chief climate and geo scientist for insurance giant Munich Re. But so far this year, he said, wealthier regions have seen the biggest economic losses. But when poorer countries are hit, they are less prepared and their people can't use air conditioning or leave so there's more harm, said Hausfather, climate director of the Breakthrough Institute. While hundreds of people died in the Pacific Northwest heat wave, he said the number would have been much higher in poor areas.