Scientists, environmentalists and government and industry officials from around the world meet this week for a summit on greenhouse gas emissions that their host, Gov. Arnold Schwarzenegger, hopes will highlight the economic benefits of pursuing green technologies. The conference, which begins Tuesday in Beverly Hills with some 700 participants expected, is an attempt by the Republican governor to influence a UN gathering in Poland next month. Schwarzenegger has said he wants the summit to inform negotiations over a new global climate treaty, which the UN hopes to finish by December 2009. "The United Nations is looking at the big picture, but what we want to know is how do we do this?" said Linda Adams, secretary of the California Environmental Protection Agency. Schwarzenegger's credentials as an advocate for reducing greenhouse gas emissions were bolstered worldwide when he signed California's landmark emissions law in 2006. He also has been critical of what he sees as a lack of meaningful action on climate change from the Bush administration.