Rag pickers collect recyclable material at a garbage dump in New Delhi November 19, 2014. (Photo by Ahmad Masood/Reuters)

Rag pickers collect recyclable material at a garbage dump in New Delhi November 19, 2014. (Photo by Ahmad Masood/Reuters)

Rag pickers collect recyclable material at a garbage dump in New Delhi November 19, 2014. (Photo by Ahmad Masood/Reuters)

Birds fly over as a rag picker collects recyclable material at a garbage dump in New Delhi November 19, 2014. (Photo by Ahmad Masood/Reuters)

Rag pickers collect recyclable material at a garbage dump in New Delhi November 19, 2014. (Photo by Ahmad Masood/Reuters)

A boy sits on his handmade raft as he collects floating recyclable material in the waters of river Sabarmati in the western Indian city of Ahmedabad July 27, 2014. (Photo by Amit Dave/Reuters)

A rag picker takes a nap on a sack filled with used plastic bottles, at the side of a road in New Delhi December 8, 2013. (Photo by Anindito Mukherjee/Reuters)

A worker uses a rope to move through a pile of empty plastic bottles at a recycling workshop in Mumbai June 5, 2014. (Photo by Danish Siddiqui/Reuters)

A porter transports a cart loaded with empty plastic drums to a recycling factory at a slum in Mumbai June 10, 2014. (Photo by Danish Siddiqui/Reuters)

A rag picker prepares to pack a sack filled with recyclable materials, mounted on his tricycle at a garbage dump on the outskirts of the southern Indian city of Bangalore August 26, 2014. (Photo by Abhishek N. Chinnappa/Reuters)

A laborer walks on a heap of scrap leather, which will be be burnt in an oven and made into fertilizer, at a factory in Kolkata February 14, 2014. Workers in the factory extract wet blue leather and recover a solid collagenic material containing high nitrogen levels, which can be used for the production of fertilizer. (Photo by Ahmad Masood/Reuters)

A scavenger, surrounded by a flock of Greater Adjutant birds, collects plastic for recycling at a dump site in the northeastern Indian city of Guwahati June 5, 2013. (Photo by Utpal Baruah/Reuters)

A man removes copper wiring from electrical cables outside a scrap shop in Dharavi, one of Asia's largest slums, in Mumbai December 10, 2012. (Photo by Danish Siddiqui/Reuters)

A man works at a metal parts recycling factory in Mumbai, October 12, 2012. (Photo by Vivek Prakash/Reuters)

A girl collects recyclable material at a garbage dump in New Delhi February 2, 2014. (Photo by Adnan Abidi/Reuters)

A boy searches for recyclable material from the cracked earth of dried-up portion of the Sabarmati river in the western Indian city of Ahmedabad May 23, 2012. (Photo by Amit Dave/Reuters)

A worker throws a broken iron chair into a furnace for recycling at an iron and steel factory on the outskirts of Jammu February 1, 2013. (Photo by Mukesh Gupta/Reuters)

A man works at an iron scrap yard at an industrial area in the southern Indian city of Chennai August 9, 2012. (Photo by Reuters/Babu)

A worker cleans a used paint bucket at a recycling factory in Mumbai June 3, 2013. (Photo by Danish Siddiqui/Reuters)