Associated Press: Gov. Arnold Schwarzenegger, seeking to further burnish his environmental credentials, is convening a global summit on greenhouse gas emissions next week in Los Angeles in an attempt to influence a United Nations conference on the topic next month. His conference, announced just six weeks ago, itself will be a sizable source of the gases blamed for global climate change, according to an analysis by The Associated Press. The AP obtained a list of the more than 1,400 invitees …