Summers in Earth’s midlatitudes are starting earlier, ending later and becoming more intense.New research is showing that they now last about 30 days longer than in the 1960s. Summer length has grown roughly six days per decade since 1990. Summers in the earth’s midlatitudes, which are the subtropical and temperate zones, are arriving earlier and more abruptly, staying longer and are hotter than previous decades, scientists have assessed. These rapid changes may impact the physiological ability of humans to adapt and increase energy demands to cool bodies. The study conducted by the University of British Columbia, Canada published in the Environmental Research Letters said that between 1990 and 2023, the average summer in the geographic regions between the tropics and polar circles lengthened to an average of about six days per decade. The increase in days is longer than the 4.8 days per decade noticed by previous research investigations until the 2012. “This increase means that ...