I went north on friday, and helped build an oven with another volunteer. (i´ve decided that I´m now an honorary Agriculture volunteer). These ovens are really awesome because they do a few interesting things, they cut back on wood used because they are more efficient and hold heat better, are cheap to build, and last for a long time. Also the design releases less smoke, therefore reducing lung problems in the household. These ovens are constructed using bricks, an old steel drum, rebar, and mud. Cement isnt used because it doesnt hold the heat as effectivly and its expensive.