Did you know that the average population of the world’s 100 largest cities was 200,000 in 1800 and over 5 million in 1990? If not, you might want to visit the United Nations Publications’ CyberSchoolBus Cities of Today, Cities of Tomorrow interdisciplinary curriculum. The curriculum, designed for grades 5-7 and 8-11, was developed after the “City Summit” in 1996 to illustrate the history, potential, and problems of urbanization around the globe. Although the units are primarily text-based, there are also many activities and some interactive quizzes. At completion of the 6 week program, students should have the knowledge and skills to create their own ideal city. There are also many other offerings in the CyberSchoolBus including units on Peace, Human Rights, and Cleaner Oceans.