rocket stove

Note: This is a revised version of an article I wrote for ye olde blogge about how to keep warm if you need to. Despite the fact that I believe people should use a lot less energy, I am not proposing here that people in cold climates go cold turkey on supplemental heating ;-). This post is, instead, about *how to survive* if you find yourself without heating fuel in a cold climate. Why do you need to know this? Because it happens, and more often than you think. How could it happen? Well, you could live in a place that requires minimal supplemental heat, and have a sudden, unusual cold…