And at the UN Global Compact Korea Leaders Summit in Seoul, the UN chief called on Korea to reduce its greenhouse gas emissions.Ban said he appreciates the launch of Korea's emissions trading scheme,but thinks the country can do much more.Korea is one of the world's top ten greenhouse gas emitting countries.The UNGC leaders summit is held once every three years, with the aim of encouraging businesses to strive for sustainable development in terms of social, economic and environmental issues.This year's event welcomed over 400 participants from home and abroad, including high-profile figures like former Indonesian President Suslio BanBang Yudhoyono.