Today, McDonald’s announces that it will begin purchasing verified sustainable beef in 2016, the first step on a quest to purchase sustainable beef for all of its burgers worldwide...[Getting to this point involved] engaging the global beef industry, from ranchers and feedlots to restaurants and supermarkets, as well as environmental groups, academics and the McDonald’s senior executive team...Bob Langert, McDonald’s vice president, global sustainability...says McDonald’s isn’t yet ready to commit to a specific quantity it would purchase in 2016...[In] November 2010 McDonald’s came together with Wal-Mart, JBS, Cargill, WWF and others to convene the Global Conference on Sustainable Beef...[This led to] the formation...of the Global Roundtable on Sustainable Beef...[which] developed six draft principles...[These] cover people (human rights, safe and healthy work environment), community (culture, heritage, employment, land rights, health), animal health and welfare, food safety and quality, natural resources...and efficiency and innovation... [Includes video of interview with Bob Langert, McDonald's. Also refers to Burger King, Wendy’s, Arby's (joint venture Roark Capital & Wendy's).]