McLean candy giant Mars said yesterday that all its chocolate products will be made from sustainable sources by 2020...The move follows an announcement last month by competitor Cadbury..."We applaud what Mars is doing, and we hope the company isn't done," Paul Rice, chief executive of TransFair USA, said in a statement. "While sustainable farm practices are very important, going forward, we hope Mars will also take a look at ensuring cocoa farmer protection and make a goal of providing a better future for farmers by ensuring that they receive fair wages."