Add Yahoo as a preferred source to see more of our stories on Google. For years, heat pumps were seen as the fragile heroes of mild climates, efficient in theory but unreliable when the mercury ...

Picture this: while you're sweltering through another hot summer, the Earth's coldest regions are heating up so fast it's making scientists do double-takes at their thermometers. The places that ...

Heat pumps are now thriving in some of the world’s coldest regions, with Norway, Sweden, Finland, and even Canada seeing record adoption. Modern systems—using variable-speed compressors, better ...