Worlds Biggest Burger Chain

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  McDonald's Testing Bigger, Smaller Big Macs

  McDonald's is testing bigger and smaller versions of its Big Mac as the world's biggest hamburger chain pushes to revive its business.

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  Now, McDonald's Testing Kiosk Ordering, Custom Burgers, Table Service and More

  The world's biggest fast-food chain has been testing myriad new ideas, including kiosk ordering, custom burgers and even a completely new restaurant brand.

• McDonald's Explains Why Its Burgers May Not Rot

  The world's biggest hamburger chain is confronting unappetizing questions as part of a United States campaign to beat back perceptions that it serves Frankenfood. The company has run similar campaigns in Canada and Australia and said it's bringing the...

• Build-Your-Own Burger at McDonald's Soon?

  McDonald's is looking to give people a little more wiggle room to customize their orders, as they can at chains such as Chipotle, Five Guys and Subway.The world's biggest hamburger chain says it's testing a "build-your-own burger" concept in California...