text: The production and trade of this commodity is governed by a set of three “flexible mechanisms” including the use of the CDM.
full_question: The production and trade of this commodity is governed by a set of three “flexible mechanisms” including the use of the CDM. William Nordhaus was one of the first economists to recommend the taxation of this commodity, which Justin Trudeau announced in October 2018 would begin in Canada at a rate of twenty dollars per ton. Many economists recommend placing a heavy Pigouvian tax on this commodity, in line with recommendations made in the 2015 Paris Agreement. For 10 points, name this commodity, a gas believed to be responsible for global warming.
first_sentence: The production and trade of this commodity is governed by a set of three “flexible mechanisms” including the use of the CDM.