Business Green: South Korea has become the latest country to confirm it is considering imposing a carbon tax as it attempts to meet its target of cutting greenhouse gas emissions four per cent by 2020. Yoon Young-sun, deputy finance minister in charge of tax and customs, told the Korea Herald that the government was undertaking a review of whether or not a straight tax on carbon emissions could help it meet its emissions targets. “The government is reviewing all options, including a carbon …