Electric cars live and die by their efficiency, and nowhere is that more obvious than on a freezing highway when the cabin heater starts draining range. Tesla’s decision to engineer its own heat pump ...

Heat pumps are electric appliances that can both heat and cool your home. Scientists see them as a climate solution because heat pumps reduce planet-heating emissions. They cut pollution from burning ...

Heat pumps date back to the 1850s and are more energy efficient than furnaces or boilers. Image: Schon via Getty Images. Get the Popular Science daily newsletter💡 ...