Letter to the editor: Carbon fee, not tariff, is the way to reduce emissions Share As syndicated columnist Megan McArdle noted July 23 (“Carbon tariffs are not a real response to climate change,” Page A11), “Global warming is a genuine cost of emitting carbon … .” And lately, that’s a cost we’ve all been feeling. While Maine hasn’t experienced the incredible heat of the West Coast or the extreme flooding of Europe, our environment is still changing. I grew up in the Lake Region school district, and I don’t remember summer temperatures of 90 degrees during my childhood. Back then, it also wasn’t a hardship not to have air conditioning in homes or cars.