How viable is wood as an alternative home-heating energy? http://www.nationaljournal.com/innovation-works/is-the-future-of-renewable-energy-stuck-400-000-years-in-the-past-20131120 …
@Chappah That was the challenge -- to design a stove to eliminate the smoke.
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@B_resnick@Chappah like filtered cigarettes ? great!Thanks. Twitter will use this to make your timeline better. UndoUndo
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