Discover how to build a simple DIY Stirling engine powered by heat from candles using an empty spray can and pen components.

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 at the University of California, Davis, have built a small device that produces mechanical power at night by exploiting the contrast between ambient warmth and the extreme cold of outer ...