| Sourced From Koreaherald.co.kr |Carbon trading system, a financial tool to reduce greenhouse gas, could cut CO2 emissions from manufacturers and utility firms, but it also raises their costs, officials said yesterday.According to the Korea Power Exchange, a nonprofit organization that controls the country’s power flow, greenhouse gas emissions by utility firms and major firms including POSCO have reduced 6.1 percent after a trial operation of the carbon trading system last month.However, the c