The calorie, a ubiquitous measurement unit, dates back more than a century.
Restaurants and other food outlets with more than 20 locations have to publicly display calorie counts. Test your calorie count prediction talents with our quiz.
Starting today, fast food restaurants, grocery store chains, convenience stores and even movie theaters must start posting calorie counts. The law — which was a provision tucked into Obamacare — applies to food retailers with 20 locations or more. How will this affect businesses? Click the audio player above to hear the full story.