About This Lesson
Food packaging lists how many ‘calories’ are inside, but scientists consider this term obsolete, opting instead for the kilojoule (kJ) when discussing energy. How did the term fall from favor? In this short article we take a look at the historical and social aspects of the terms calorie and Calories and explore what scientists use today to talk about energy. Part of Wellcome Trust's Big Picture: Food and Diet (www.wellcome.ac.uk/bigpicture/food)
