Can't get article to open but if it is about them whining about CO2 emissions, woodheat.org addresses this in many of its articles. I read on there somewhere that the CO2 released through the burning of the wood is the same CO2 the tree absorbed through its growth. This absorbed CO2 will be released whether humans burn it, mother nature burns it, or if it falls and rots on the ground. This makes wood burning a CO2 neutral process and the heat created replaces energy that would be otherwise used in place of wood heat.
Of course this all assumes CO2 is bad...