I heard on the radio that some group somewhere wanted to make a regulation that would designate carbon dioxide as a pollutant gas. That would make quite a few businesses and organizations that had a net release or use of carbon dioxide need to purchase permits of several thousand dollars, which would end up making a large financial strain on these businesses. There was quite a bit of controversy as to if you could really qualify carbon dioxide as a pollutant; more political horse-hockey if you ask me. Some people just have too much time on their hands....