Doug Wechsler / Aerial view of marina built in saltmarshes, Avalon, New Jersey, USA

Doug Wechsler / Housing development on saltmarsh, Avalon, New Jersey, USA

Doug Wechsler / Aerial view of urban expansion - extensive development of coastal wetlands, Sea Isle City, Barrier Island, New Jersey, USA

Martin Dohrn / Aerial view of Bombay shanty town, Maharashtra, India

Nick Garbutt / Boats and slum huts on the shores of River Ganges, Garnmuktesar, Uttar Pradesh, India

Karl Ammann / Refugee camp in Democratic Republic of Congo after the genocide in Rwanda.

Norbert Wu / California Sea Lion (Zalophus californianus) group crowding piers and boat ramps due to overpopulation, Monterey, California

Jeff Foott / Smog in city, Beijing, China

Norbert Wu / California Sea Lion (Zalophus californianus) group on piers and boat ramps, Monterey, California