rocket stove designs! The rocket stove (and its grandfather, the Dakota fire pit) are important designs for - by promoting air flow, they burn their fuel several times more efficiently, meaning that 1. almost no smoke is produced, 2. fallen branches and prunings can be used as fuel, rather than destroying trees, and 3. you get a hotter, longer-burning fire!

attainable-sustainable.net/roc - Concrete block rocket stove
treehugger.com/gadgets/build-m - Tin can rocket stove
survivaltopics.com/the-dakota- - Dakota fire pit

@socalledunitedstates and microgasification wood/saw-dust/husk stoves are even _more_ efficient!

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