A New Delhi rag-pciker at work on the Ghazipur landfill site, 18 February 2010 Daniel Berehulak: "This waste site is one of the biggest in Delhi. It’s three-to-four kilometres square, with this landscape of rubbish mountains that changes every day as new rubbish comes in from the city. There are hundreds of men, women and children working there, foraging through the garbage and collecting whatever is valuable – and everything is valuable, from plastic to metal. The smell is incredible because in among it all is plant waste and animal entrails that have been thrown out. But after an hour there you can’t smell anything. My sense of smell didn’t come back for a couple of days afterwards. I noticed this girl quite early on – she was very striking in among it all. Sometimes you can get desensitised to what you’re seeing, but when you ­relate it back to your own life, when you think that person is the same age as my niece, then it can really hit you"Photograph: Daniel Berehulak/Getty Images