New research reports that countries including Mexico and Italy are experiencing longer periods of heat stress than they did in the 1970s. The study, published on Monday, compares recent heat conditions with those from several decades ago and finds increases that range from about one to two additional months of heat stress in parts of the affected countries. The article coverage indicates the pattern is not limited to a single region, listing multiple countries that show similar shifts, including Kenya along with Mexico and Italy. The research also suggests that certain areas may experience even greater increases than the broader range described in the reports, depending on local conditions. While the articles do not detail specific heat-stress definitions, thresholds, or the datasets used, they align on the main conclusion: recent decades have brought longer seasonal durations of heat stress compared with the 1970s. The findings are presented as evidence of changing heat patterns that extend further into the year than in earlier decades.