New delhi

Rag pickers collect recyclable material at a garbage dump in New Delhi...Rag pickers collect recyclable material at a garbage dump in New Delhi November 19, 2014.

Ahmad Masood/Reuters

Rag pickers collect recyclable material at a garbage dump in New Delhi, India on Wednesday

Workers display their coal-covered hands for a photograph at a wholesaler in New Delhi, India, on Wednesday. Prime Minister Narendra Modi is seeking to end a four-decade-old government monopoly on mining and selling coal.

Kuni Takahashi/Bloomberg

Workers display their coal-covered hands at a wholesaler in New Delhi, India. Prime Minister Narendra Modi is seeking to end a four-decade-old government monopoly on mining and selling coal

An Indian laborer carries bundles of Marigold flowers on his head before they are distributed to different parts of the city in the morning at a whole sale market in New Delhi, India

Bernat Armangue/AP

An Indian laborer carries bundles of Marigold flowers on his head before they are distributed to different parts of the city in the morning at a whole sale market in New Delhi, India

India Fire

AP Photo/Altaf Qadri

An Indian girl rests as others try to salvage their belongings from the debris of shanties destroyed in a fire at a slum in New Delhi, India on Friday

School children dressed as Mahatma Gandhi take part in a march to mark the 145th birth anniversary of Gandhi in New Delhi

Adnan Abidi/Reuters

School children dressed as Mahatma Gandhi take part in a march to mark the 145th anniversary of the birth of Gandhi in New Delhi, India.

Tibetan exiles are detained by police during a protest outside the venue of a meeting between Chinese President Xi and Indian PM Modi in New Delhi...Tibetan exiles are detained by police during a protest outside the venue of a meeting between Chinese President Xi Jinping and Indian Prime Minister Narendra Modi in New Delhi September 18, 2014. Groups of Tibetan activists held noisy protests outside the hotel where Xi was staying in New Delhi, and at the stately Hyderabad House where he sat down for formal talks with Modi.

Adnan Abidi/Reuters

Tibetan exiles are detained by police in New Delhi during a protest outside the venue of a meeting between China’s President Xi Jinping and Narendra Modi, prime minister of India

A rag picker sorts through garbage, picking out recycable materials to sell, as birds hover and a dog sleeps at the Ghazipur landfill site in the east of New Delhi, India, on Friday, May 30, 2014. New Delhi, whose population will reach almost 21 million by 2015, generates 8,000 tons of garbage a day. Trash is not separated between organic and inorganic materials -- everything from leftover food to batteries and beverage cans goes into Indian bins -- hurting efficiency and raising toxic emissions.

Udit Kulshrestha/Bloomberg

A rag picker sorts through garbage, picking out recyclable materials to sell at the Ghazipur landfill site in the east of New Delhi, India, on Friday

An Indian man stands at the doorway of a train at a railway station in New Delhi, India, Wednesday, May 14, 2014.  Indian railway network is one of the world's largest, with some 14 million passengers daily and some 64,000 kilometers (40,000 miles) of railway track cut through some of the most densely populated cities. (AP Photo/Tsering Topgyal)

Tsering Topgyal/AP

An Indian man stands at the doorway of a train at a railway station in New Delhi, India. Indian railway network is one of the world’s largest, with some 14 million passengers daily and some 64,000 kilometers (40,000 miles) of railway track cut through some of the most densely populated cities 

A girl sits backstage after getting ready for her dance recital to celebrate International Dance Day, in New Delhi April 29, 2014. REUTERS/Adnan Abidi

Adnan Abidi/Reuters

A young ballerina watches the stage after her dance recital in New Delhi 

Indians watch a fire at a warehouse storing leftover cloth strips in New Delhi, India, Tuesday, April 29, 2014. The cause of fire is unknown. No casualties have been reported so far, according to fire officials.

Manish Swarup/AP

Bystanders watch a cloth warehouse fire in New Delhi, India on Tuesday.