Burning anything can be "actively" toxic and cancerous. You can argue about the process of anything, but that shifts the conversation away from the energy sourc

Burning anything can be "actively" toxic and cancerous. You can argue about the process of anything, but that shifts the conversation away from the energy source. Wood doesen't have to be burned in X place, and it _could_ be gathered and processed using clean procedures, but they're outside of the scope of wood being carbon neutral.