Alison speaks to urban theorist and author Richard Florida about importance of cities globally and the importance of dealing with deepening inequalities within them.
An estimated 54.5% of the global population lives in cities. That number is expected to rise to 66 percent by 2050
Brock Carlton, CEO of the Federation of Canadian Municipalities, talks about the increasing role cities can play globally, particularly in areas such as climate change and international trade.
Rodrigo Tavares, author of 'Paradiplomacy - Cities and States as Global Players', speaks about the role cities and other sub-national governments can play in the area of foreign affairs.
Slums are home to 900 million people worldwide. Nearly 1 in every 7 people lives in a slum.
Leona Lindiwe Ntshalintshali, Deputy President of the South African Local Government Association discusses the problems caused by urbanization in the developing world and also legislation being considered that would give more power to cities to ensure they provide the necessary services to the communities on the ground.