Studies show that obesity is now a global problem. But how are researchers measuring obesity? Young scientists investigate the myriad of methods for measuring body fat through a presentation. From hands-on to high-tech, viewers learn...

What are calories, and how do calorie needs differ from person to person? Here is a worksheet that briefly explains how calories measure the energy supplied by food, as well as suggests the amount of food an individual should eat per day.

Young learners discuss how to practice healthy eating habits and the body's need for energy through discussion and exploration of the MyPlate system.