{description}"Do you prefer Pepsi or Coke?" used to be the big question when we were growing up: as kids, we fought for our favorite brand, claiming that Pepsi was too sweet or Coke was too sparkling. Many of us, including myself, grew tired of this never-ending debate: "They taste the same, who cares?" Doctor Samuel McClure at the Baylor College of Medicine cares. In October 2004, McClure and fellow neurobiologists performed a blind-taste test, investigating how the brains of 67 subjects responded to Pepsi and Coke.{/description}