National Public Radio talks with Dr. Walter Willett, Harvard MD and nutritionist, about changes that need to be made in the 1992 US Food Guide Pyramid. Interesting as an introduction to this topic, with links to related stories.

This science song for kids gives the characteristics of living things. Living things grow, have cells, need nutrients and water and reproduce. Sing along with Jack Hartmann and act out real examples of living things. Move along with how...