Each year, Principal Voices tackles some of the most pressing issues facing the world today.

In 2006, the subjects being discussed and debated are:

	Urbanization: thousands of people are arriving every day in cities around the world. What are the problems caused by this new era of urban living?
	The environment: the Earth's environment is changing at unprecedented speed, and many scientists believe the climate is warming up. What should be done?
	Economic Development: the world is getting richer, but not everyone is feeling the benefit, with Africa in particular losing out. Why is this?
	Collaborative Corporation: Corporate social responsibility is the new buzzword for big companies. Is this something new, or just profit-making with a kinder face?