Wrap the copper tubing around the burn chamber to add even more heat-capturing surface area. Concentrate the coils around the bottom third of the chamber to gain the most heat. My wife and I designed ...

Rocket stoves are an interesting, if often overlooked, method for cooking or for generating heat. Designed to use biomass that might otherwise be wasted, such as wood, twigs, or other agricultural ...

[Bigelow Brook Farm] has a cool geodesic dome greenhouse that needs to stay warm in the winter. There are a lot of commercial solutions for greenhouse heating, but if you’re the kind of person who ...