South Korea will cut its greenhouse gas emissions by 4 percent from its 2005 level by 2020, the country's presidential office Cheong Wa Dae said Tuesday. It would be equivalent to 30 percent of the proposed Business-as-usual (BAU) guideline. The decision was made at a weekly Cabinet meeting chaired by President Lee Myung-bak on Tuesday. The government has weighed three options on gas emissions cut target. Besides the 4-percent plan, the other two was an 8 percent increase ...