By 2012, all of Japan should be using energy-saving fluorescent bulbs rather than incandescent bulbs as part of the effort to cut greenhouse gas emissions, Minister of Economy, Trade and Industry Akira Amari said Saturday. "I think this is a prime example of a campaign that is accessible and can be participated in by everyone," Amari told a news conference after attending a public meeting on environmental issues in Toyako, Hokkaido, where the annual Group of Eight summit will be held in July.