A rocket stove burns so efficiently that it ensures almost complete combustion prior to the flames reaching the cooking surface, so there is virtually no smoke. And they're easy to make! Click through (Diy Step Fitness)
medicalstate: A Brief Guide to Sutures. My current repertoire consists of the simple (over and inverted), subcuticular, horizontal mattress, vertical mattress, and lock-stitch sutures. This set of skills takes care of most problems.