Refrigeration is commonplace in the modern era. We use it to keep our food from spoiling, to cool our homes and workplaces, and to keep our car cabins from becoming saunas. There are even specific ...

E-bikes and motorcycles are great, but what if there were another way to get moving? What if there were a motor that didn't require the combustion of Odin's juice to get moving? Well, there are plenty ...

Engineers have built a modern Stirling engine that quietly turns the cold of outer space into steady mechanical power, using the night sky as a heat sink instead of a fuel tank. By radiating heat away ...