Operational since 1948, McDonald's Corp. is one of the leading foodservice retailers in the world. Its menu consists of a range of food items, such as burgers, sandwiches, chicken, breakfast, salads, snacks, sides, beverages, desserts and shakes. The firm operates more than 32,000 local restaurants serving over 60 million customers in 117 countries. For over 20 years, McDonald's Corp. has maintained its partnership with Environmental Defense Fund, an organization specializing in creating transformational solutions for environmental problems.