Gaining mind of peace

Why are there wars? Why do people destroy with terrorism, riots, lynchings? Why do they bully others, or look away when others are in trouble? People who study the mind and behavior -- psychologists -- have been trying to figure this out for a long time. This book explains some of what we know so far. It also gives ideas for what we can do about it, especially what young people can do. For grades 6 and up.