World Cities

Urbanisation today and tomorrow ,[object Object],[object Object],[object Object],[object Object]

Types of city ,[object Object],[object Object],[object Object],[object Object],[object Object]

Urban growth ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Megacities (1) ,[object Object],[object Object],[object Object]

Megacities (2) Jakarta Dhaka Karachi Lagos Mumbai Kolkata Cairo Delhi Manila Beijing Rio de Janeiro Shanghai Buenos Aires S ã o Paulo Mexico City Osaka-Kobe Tokyo Moscow Los Angeles New York Immature, rapidly growing South/southeast Asia and Africa Population under 30% urban 20%+ slums Consolidating, growing South America and southeast Asia Population 40–50% urban Under 20% slums Mature, slow growing Europe and North America Population 70%+ urban No slums

Future trends ,[object Object],[object Object],[object Object],Top ten megacities, 2015 (predicted) 15.2 Dhaka 16.8 Jakarta 17 Calcutta 17.2 Shanghai 18.6 Delhi 19.9 New York 20.5 S ão Paulo 21 Mexico City 22.5 Mumbai 35 Tokyo 2015 population (millions)

Slums (1) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Increasing numbers of people live in the slums and shanty towns of the developing world’s megacities:

Slums (2) ,[object Object],[object Object],[object Object],[object Object],[object Object]

Megacity problems (1) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Megacity problems (2) ,[object Object],[object Object],[object Object]

Megacity problems (3) ,[object Object],[object Object]

Urban resource use (1) ,[object Object],[object Object],[object Object],[object Object],[object Object]

Urban resource use (2) ,[object Object],60 million tonnes of carbon dioxide 4 million tonnes of household waste 11.4 million tonnes of industrial and demolition waste 400,000 tonnes of sulphur dioxide 280,000 tonnes of nitrogen oxides 7.5 million tonnes of wet, digested sewage sludge 20 million tonnes of fuel, in oil equivalent 40 million tonnes of oxygen 2.2 million tonnes of paper 2.4 million tonnes of food 1 billion tonnes of clean water 360 tonnes of glass 2.1 million tonnes of plastics 1.2 million tonnes of metals 1.2 million tonnes of timber 2 million tonnes of cement 36 million tonnes of bricks, blocks, sand and tarmac Outputs Inputs

Urban resource use (3) ,[object Object],Using less polluting vehicles Using alternative (renewable) energy sources More recycling Reusing and recycling water More carbon sequestration (e.g. urban gardens, farms and forests) Water metering and mending leaking pipes Reducing packaging Introducing more public transport/more efficient vehicles Using recycled building materials Localising food distribution and improving storage Ways to reduce outputs Ways to reduce inputs

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