More extreme heat is coming. Study shows world’s least-prepared regions.

A new study identifies regions that are underprepared and most at risk from sweltering heat, highlighting the need to prepare for extreme temperatures around the world.

Led by researchers at the University of Bristol, the study found that unprecedented heat, coupled with growing populations or limited health-care and energy resources, puts some parts of the world at the most risk, including Afghanistan, Papua New Guinea and countries in Central America.