David Woodfall / Woman walking through polluted slum, Dhaka, Bangladesh, July 2008

Onne van der Wal / Laundry hanging out to dry. Valparaiso, Chile, 2008.

David Woodfall / Children looking for recyclable objects in landfill site, Dhaka, Bangladesh, July 2008

David Woodfall / Woman walking through polluted slum, Dhaka, Bangladesh, July 2008

David Woodfall / Teenagers and chidren collecting fresh water in industrial slum, Bhopal, Madhya Pradesh, India, November 2008

David Woodfall / Women and children collecting clean water in industrial slum Bhopal Madyah Pradesh, India, November 2008

David Woodfall / Women and children queueing to collecting clean water in industrial slum Bhopal Madyah Pradesh, India, November 2008

David Woodfall / House in industrial slum, Bhopal, Madhya Pradesh, India, November 2008

David Woodfall / Family outside house amongst industrial pollution in slum, Bhopal, Madhya Pradesh, India, November 2008

David Woodfall / Family entering house in industrial slum, Bhopal, Madhya Pradesh, India, November 2008

David Woodfall / Domestic pollution around stream in slum, Bhopal, Madhya Pradesh, India, November 2008

David Woodfall / Domestic pollution around stream in slum, Bhopal, Madhya Pradesh, India, November 2008

David Woodfall / Child plahing in stream amongst domestic pollution in slum with cattle in background, Bhopal, Madhya Pradesh, India, November 2008

David Woodfall / Pig and dogs foraging amongst industrial and domestic pollution in stream in slum, Bhopal, Madhya Pradesh, India, November 2008

David Woodfall / Industrial and domestic pollution around stream in slum, Bhopal, Madhya Pradesh, India, November 2008

David Woodfall / woman collecting clean water in industrial slum, Bhopal, Madhya Pradesh, India, November 2008

David Woodfall / Aerial view of a developing world capital city, Dhaka, Bangladesh, November 2008

David Woodfall / Children in slum housing over polluted water, Dhaka, Bangladesh, November 2008

David Woodfall / Street children searching for recyclable objects at landfill, Dhaka, Bangladesh, November 2008

David Woodfall / Children playing in drainage pipe in slum, Dhaka, Bangladesh, November 2008, November 2008

David Woodfall / Polluted water and slum, Dhaka, Bangladesh, November 2008

David Woodfall / Bangladeshi man cooking in slum, Dhaka, Bangladesh, November 2008

David Woodfall / Adult and child searching for recyclable objects in landfill site, Dhaka, Bangladesh, November 2008

David Woodfall / Woman walking through narrow alleyway between buildings in slum, Dhaka, Bangladesh, November 2008

David Woodfall / Children playing in slums, Bhopal, Madhya Pradesh, India, November 2008

David Woodfall / People collecting clean water from tap in industrial slum, Bhopal, Madhya Pradesh, India, November 2008

Tim Laman / Aerial view of rooftops of basic housing and railway, San Jose, Cartago, Costa Rica.

Pete Oxford / Family living in tiny shack, street scene from Calcutta, West Bengal, India

Patricio Robles Gil / Aerial view of coastal housing, Davao city, Mindanao Island, Philippines

Luiz Claudio Marigo / Favela slums of Santa Marta Hill, Rio de Janeiro, Brazil

Nick Garbutt / Shanty town homes built on stilts Kota kinabalu, Sabah, Borneo, Malaysia

Fabio Liverani / Buses and other vehicles in the Bidonville slums of Lagos, Nigeria. 2002

Fabio Liverani / Vegetable refuse from market stalls in the Bidonville slums of Lagos, Nigeria West Africa. 2002

Fabio Liverani / Beggars on railway bridge in the Bidonville slums of Lagos, Nigeria, West Africa 2002

Fabio Liverani / Street scene with scavenging goats in the Bidonville slums of Lagos, Nigeria, West Africa 2002

Fabio Liverani / Street scene in the Bidonville slums of Lagos, Nigeria, West Africa 2002

David Woodfall / Domestic pollution around stream in slum with cattle in background, Bhopal, Madhya Pradesh, India, November 2008

Albert Lleal / Contaminated standing water that causes disease in slums of Dhaka, Bangladesh