Morning Business Memo: Diet Pepsi is quietly changing its sweetener as it looks for new ways to compete against Coke. Diet Pepsi used to contain only the sweetener aspartame, which is sensitive to heat and breaks down more easily. Now it also contains another sweetener,...

Read more http://feeds.abcnews.com/click.phdo?i=e8c8095711660094b7e5f1f5be27777d