Soda is the second most popular drink in the United States, and it's because children and adults alike are gulping down copious amounts of bubbly artificial liquids without a realistic sense of health consequences. Research scientists at Consumer Reports teamed up with the Center for a Livable Future at the Johns Hopkins Bloomberg School of Public Health to study how much danger Americans are putting themselves in each time they drink another caramel-colored soft drink like Coca-Cola or Pepsi.