Seeing Red and Feeling Blue will provide a scientific but accessible overview of the various theories about our destructive emotions, seeking to answer the following questions: -If 'bad' behaviour is driven by disordered brain chemistry, then how and why does this chemical disorder happen? Is it something in our genes, or do environmental and social factors play a part? -If chemistry is key, then what new solutions to the problems of stress, depression and crime might be generated by playing around with people's brain chemistry and genes? -What are the ethical and psychological implications of these potential solutions?