Have you ever imagined a bike powered not by gasoline or electricity, but by the simple act of heating and cooling air? It might sound like something out of a science fiction novel, but the concept is ...

Stirling engines, with their high conversion efficiency and excellent adaptability to various heat sources, show significant promise in the nuclear energy sector. This is particularly true for ...

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 ...

Martin LaMonica is a senior writer covering green tech and cutting-edge technologies. He joined CNET in 2002 to cover enterprise IT and Web development and was previously executive editor of IT ...