Examines the science behind the genetic modification of foods, looking at how it has been used to create crops that are resistant to pests and disease, encourage plant and animal growth, and add vitamins to common foods; and discusses why some people are opposed to the practice of genetically altering food.

Understanding genes -- Improving plants and animals -- Genetic changes -- New crops -- Genetically modified animals -- Changes to our food -- GM and the environment -- The future of GM food -- Conclusion.