A man whose livelihood depends on selling recyclable wastes collects trash from a dumping site as he surrounded by Marabou storks on the outskirt of Uganda's capital Kampala March 31, 2015. REUTERS/James Akena

Soburn, an 11-year-old girl, collects what can be used as food for pigs at landfill dumpsite outside Siem Reap March 19, 2015. A second-grade student, she helps her parents in the morning collecting usable items at the dumpsite where they live before going to school in the afternoon. Anlong Pi, an eight-hectare dumpsite situated close to the famous Cambodian resort province of Siem Reap, has recently become a tourist attraction in its own right. Sightseers pose for pictures with children who scavenge scraps for a living, making between $0.25 and $2 per day, according to a representative of a company overseeing the waste. Michelle Obama is due to visit to Cambodia to promote Let Girls Learn, a worldwide initiative that aims to help adolescent girls attend school. REUTERS/Athit Perawongmetha

PICTURE 8 OF 23 FOR WIDER IMAGE STORY 'LIVING ON RUBBISH'

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Garbage collectors, with their horse and cart, unload rubbish at the municipal dump in Nezahualcoyotl, on the outskirts of Mexico City, February 18, 2015. Hundreds of horse or donkey-drawn carts will disappear from the streets of a municipality in the state of Mexico, located on the outskirts of Mexico City, and will be replaced by motorized vehicles, local authorities said. Nezahualcoyotl, commonly known as Neza, has started to retire 457 two-wheeled carts which have been collecting household rubbish for the past 45 years. They currently gather 300 of the 1,200 tonnes of rubbish produced in the area on a daily basis.The carts will be replaced by motorized vehicles - a motorcycle and trailer with capacity for half a tonne of rubbish - in the next two months. The vehicles will move along at 30 kilometres (18 miles) per hour. REUTERS/Henry Romero (MEXICO - Tags: SOCIETY TPX IMAGES OF THE DAY) 

Julia Huachwilca, 66, carries food and recyclable materials salvaged from garbage in the San Juan de Miraflores district on the outskirts of Lima January 29, 2015. REUTERS/Mariana Bazo (PERU - Tags: SOCIETY POVERTY) 

A girl stands on a pipe beside an open sewer in a slum on the outskirts of Lahore January 12, 2015. REUTERS/Zohra Bensemra (PAKISTAN - Tags: SOCIETY) 

Razia (R), 9, Amna (C), 11 and Saadia, 10 sort papers before they are taken to a factory to be recycled in Lahore January 12, 2015. REUTERS/Zohra Bensemra (PAKISTAN - Tags: SOCIETY ENVIRONMENT) 

Afghan refugees sit on sacks filled with used plastic items to sell at their makeshift shelter in a slum on the outskirt of Lahore January 12, 2015. REUTERS/Zohra Bensemra (PAKISTAN - Tags: SOCIETY) 

A boy looks for recyclable materials among the garbage washed ashore due to Typhoon Hagupit in Cavite, south of Manila December 9, 2014. Typhoon Hagupit weakened further on Tuesday as the storm crawled across the central Philippines, while rescue workers struggled in its aftermath to reach towns in central provinces where thousands of homes were wrecked and at least 27 people killed. REUTERS/ Ezra Acayan (PHILIPPINES - Tags: ENVIRONMENT DISASTER SOCIETY POVERTY TPX IMAGES OF THE DAY) 

Rag pickers collect recyclable material at a garbage dump in New Delhi November 19, 2014. REUTERS/Ahmad Masood (INDIA - Tags: SOCIETY BUSINESS EMPLOYMENT ENVIRONMENT) 

Rag pickers collect recyclable material at a garbage dump in New Delhi November 19, 2014. REUTERS/Ahmad Masood (INDIA - Tags: SOCIETY ENVIRONMENT BUSINESS EMPLOYMENT TPX IMAGES OF THE DAY) 

Rag pickers collect recyclable material at a garbage dump in New Delhi November 19, 2014. REUTERS/Ahmad Masood (INDIA - Tags: SOCIETY ENVIRONMENT BUSINESS EMPLOYMENT TPX IMAGES OF THE DAY) 

A woman carries sacks of cans after she and her daughter collected the cans from the streets of Phnom Penh November 17, 2014. REUTERS/Samrang Pring (CAMBODIA - Tags: SOCIETY POVERTY) 

A Greek Roma raises a Greek national flag next to a burnt-out garbage bin during a protest against a state decision to demolish and remove their camp in Athens, September 30, 2014. According to local media, a state decision to demolish and transfer a Roma camp from the northern suburb of Halandri, which it has occupied for 40 years, to Megara in West Attica caused members of the Roma community to show their dissatisfaction by torching rubber tyres and blocking traffic. REUTERS/Alkis Konstantinidis (GREECE - Tags: SOCIETY CIVIL UNREST) 

Garbage collectors look for recyclable waste at a garbage dumpsite near Buenos Aires September 24, 2014. REUTERS/Enrique Marcarian (ARGENTINA - Tags: BUSINESS SOCIETY POVERTY) 

A boy takes a nap inside a culvert used to prevent flooding, next to a pile of trash along a busy street in Tondo, Manila September 3, 2014. REUTERS/Erik De Castro (PHILIPPINES - Tags: SOCIETY) 

A trash recycler makes his rounds in search of recyclable items in Buenos Aires, July 31, 2014. Argentina defaulted on its debt for the second time in 12 years, a situation that will raise companies' borrowing costs, pile more pressure on the peso, drain dwindling foreign reserves and fuel one of the world's highest inflation rates, according to analysts. REUTERS/Enrique Marcarian (ARGENTINA - Tags: BUSINESS POLITICS) 

A boy stands near a cart while his parents look for scrap iron, which will be sold to recycling companies, from the ruins of a building damaged during a 1972 earthquake in the old centre of Managua May 5, 2014. The building was demolished after the government declared it unsafe due to an earthquake that struck Nicaragua on April 10 this year. REUTERS/Oswaldo Rivas (NICARAGUA - Tags: DISASTER ENVIRONMENT SOCIETY) 

People look for scrap iron, which will be sold to recycling companies, from the ruins of a building damaged during a 1972 earthquake in the old centre of Managua May 5, 2014. The building was demolished after the government declared it unsafe due to an earthquake that struck Nicaragua on April 10 this year. REUTERS/Oswaldo Rivas (NICARAGUA - Tags: DISASTER ENVIRONMENT SOCIETY) 

Bulgarian Roma kids react to being photographed as they salvage materials from a demolished shack in a Roma suburb in the city of Plovdiv, central Bulgaria April 25, 2014. Municipal authorities started demolishing some 50 illegally built shacks, houses and shops in the suburb on Tuesday. REUTERS/Stoyan Nenov (BULGARIA - Tags: SOCIETY TPX IMAGES OF THE DAY) 

A woman collects recyclable material in the Duquesa garbage dump in Santo Domingo March 8, 2014. On March 8th activists around the globe celebrate International Women's Day, which dates back to the beginning of the 20th Century and has been observed by the United Nations since 1975. The UN writes that it is an occasion to commemorate achievements in women's rights and to call for further change. REUTERS/Ricardo Rojas (DOMINICAN REPUBLIC - Tags: SOCIETY) 

A woman collects recyclable material in the Duquesa garbage dump in Santo Domingo March 8, 2014. On March 8th activists around the globe celebrate International Women's Day, which dates back to the beginning of the 20th Century and has been observed by the United Nations since 1975. The UN writes that it is an occasion to commemorate achievements in women's rights and to call for further change. REUTERS/Ricardo Rojas (DOMINICAN REPUBLIC - Tags: SOCIETY) 

Residents sit outside their shanty houses along the Andriantany waste water channel where "La Reunion Kely" is located in Madagascar's capital Antananarivo, December 21, 2013. The two candidates in Madagascar's presidential run-off election were neck and neck in early vote counting on Saturday, in a poll meant to end a deep-rooted political rift that has driven away investors and contributed to a shrinking economy. REUTERS/Thomas Mukoya (MADAGASCAR - Tags: POLITICS ELECTIONS SOCIETY ENVIRONMENT) 

A homeless man searches in the garbage piled along a street during a strike by public sector workers demanding for an increase in their salaries, in Valparaiso city, about 121 km (75 miles) northwest of Santiago. November 5, 2013. Garbage collectors demanding for higher pay have been on strike for the past two weeks. REUTERS/Eliseo Fernandez (CHILE - Tags: CIVIL UNREST POLITICS) 

A Gypsy family collecting recyclables from trash containers make their way across the street on a horse and buggy in Belgrade October 20, 2013. REUTERS/Zoran Milich (SERBIA - Tags: SOCIETY POVERTY) 

Children sift through floating garbage as they collect recyclable items to sell while strong waves crash along the shores of Manila Bay, near a slum area in Manila August 12, 2013. Typhoon Utor slammed into the Philippines on Monday, weakening slightly after hitting the country's north and is moving slowly west-northwest, weather and disaster officials said. REUTERS/Romeo Ranoco (PHILIPPINES - Tags: ENVIRONMENT SOCIETY) 

Children sift through floating garbage as they collect recyclable items to sell while strong waves crash along the shores of Manila Bay, near a slum area in Manila August 12, 2013. Typhoon Utor slammed into the Philippines on Monday, weakening slightly after hitting the country's north and is moving slowly west-northwest, weather and disaster officials said. REUTERS/Romeo Ranoco (PHILIPPINES - Tags: ENVIRONMENT SOCIETY) 

A man rummages through a garbage container in Barcelona June 17, 2013. REUTERS/Albert Gea (SPAIN - Tags: SOCIETY) 

Garbage collectors hang out from the back of a garbage truck at the municipal dump site, on the outskirts of Tegucigalpa June 14, 2013. Some 80 families make their living each day by scavenging the garbage piles at the city dump, local media reported. REUTERS/Jorge Cabrera (HONDURAS - Tags: SOCIETY POVERTY) 

Eugene, an 87-year-old retired Frenchman, searches for food in a garbage container next to a supermarket in Nice June 13, 2013. A former interior decorator, and a pensioner of 24 years, Eugene lives in Nice and is the owner of a small apartment in a bourgeois district of the city. Although he receives a monthly pension of 1000 euros (1300 $US), he started rummaging through trash bins to collect food in 2012, as he did when a teenager during World War II, because 'times are hard' he said. He drives his old car seeking out supermarket trash containers in different parts of the city to fill his fridge. Eugene dreams of going to Las Vegas. Following a government report today June 14, 2013 the French should pay contributions for longer to get a full pension and well-off pensioners should get fewer tax rebates. Picture taken June 13, 2013. REUTERS/Eric Gaillard (FRANCE - Tags: SOCIETY POVERTY FOOD) 

EDITORIAL USE ONLY - NO COMMERCIAL OR BOOK SALES. A homeless scrap collector sleeps outside in central Athens May 26, 2013. Since the debt crisis erupted in 2009, hundreds of thousands of Greeks have lost their jobs and the unemployment rate in the country reached 26.8 percent in March, new figures show. Klimaka, a nongovernmental organisation, estimated there were around 20,000 homeless in Greece in 2012. Picture taken May 26, 2013. REUTERS/Yannis Behrakis (GREECE - Tags: SOCIETY POLITICS BUSINESS EMPLOYMENT)

ATTENTION EDITORS: PICTURE 29 OF 41 FOR PACKAGE 'DOWN AND OUT IN ATHENS'. TO FIND ALL IMAGES SEARCH 'UNEMPLOYMENT YANNIS' 

Boys look for recyclable materials in the polluted waters of a canal in a slum area outside of Sanaa May 1, 2013. REUTERS/Mohammed al-Sayaghi (YEMEN - Tags: SOCIETY POVERTY) 

A man searches for food in a trash bin in Solkan May 1, 2013. Slovenia abandoned an attempt to issue bonds and Moody's cut its debt rating to "junk" on Tuesday, dealing a blow to the country's goal of healing its ailing state-owned banks and avoid following Cyprus into the euro zone's emergency room. REUTERS/Srdjan Zivulovic(SLOVENIA - Tags: SOCIETY POVERTY BUSINESS) 

Waste pickers wash their faces in an underground water tank near the dumping site of a vegetable market in Kathmandu May 1, 2013. May 1st marks International Labour Day or May Day in Nepal. REUTERS/Navesh Chitrakar (NEPAL - Tags: SOCIETY BUSINESS EMPLOYMENT) 

A Roma boy plays front of shelters in an illegal camp in Lille, northern France on International Roma Day April 8, 2013. REUTERS/Pascal Rossignol (FRANCE - Tags: SOCIETY POVERTY IMMIGRATION) 

A man collecting recyclable goods carries bags as people walk to shop in central Seoul April 8, 2013. Tension has been rising since the United Nations imposed new sanctions against North Korea in response to its third test of a nuclear weapon in February. Pyongyang has been further angered by weeks of joint military exercises by South Korean and U.S. forces and threatened both countries with nuclear attack. REUTERS/Lee Jae-Won (SOUTH KOREA - Tags: POLITICS BUSINESS SOCIETY) 

A girl works at a garbage disposal site near the southern Yemeni province of Taiz March 31, 2013. REUTERS/Mohamed al-Sayaghi (YEMEN - Tags: SOCIETY POVERTY) 

A boy drinks from a bottle as he sits at a garbage disposal site near the southern Yemeni province of Taiz March 31, 2013. REUTERS/Mohamed al-Sayaghi (YEMEN - Tags: SOCIETY POVERTY) 

A man pushes a trolley with objects collected from the street in central Madrid March 30, 2013. REUTERS/Javier Barbancho (SPAIN - Tags: SOCIETY) 

A boy looks for plastic bottles at the polluted Bagmati River in Kathmandu March 22, 2013. This year's theme for World Water Day, which falls on March 22, is "Water Cooperation" and is in line with the celebration of the International Year of Water Cooperation. REUTERS/Navesh Chitrakar (NEPAL - Tags: SOCIETY ENVIRONMENT) 

A garbage collector searches a trash container at a migrant workers' village in Beijing March 19, 2013. China's new leaders are planning a system of national residence permits to replace the household registration or 'hukou' regime, a government source said, a vital reform that will boost its urbanisation campaign and drive consumption-led growth. REUTERS/Kim Kyung-Hoon (CHINA - Tags: BUSINESS POLITICS SOCIETY) 

Daniel Garcia, 37, searches for cardboard at a recycling canister before asking for money in Madrid March 13, 2013. Garcia, a former forklift operator and driver from Andalucia, has been out of a regular job for the past two years. When his unemployment benefits and subsidies ran out, he started to ask for alms on the street in order to be able to afford the room he rents at a guesthouse and feed himself. "I think of this as a temporary situation. My goal is to get a job and live a normal life again" he says. REUTERS/Susana Vera (SPAIN - Tags: SOCIETY) 

Scrap dealer Abdour Rachman, 33, from Bangladesh, stands behind a shopping trolley with scrap in a weighing station in Athens January 28, 2013. Dozens of poor, usually African or Asian migrant scrap hunters spotted in rundown areas balancing supermarket trolleys stacked with metal, plastic and paper. Picture taken January 28, 2013. REUTERS/John Kolesidis (GREECE - Tags: BUSINESS EMPLOYMENT SOCIETY IMMIGRATION POVERTY) 

An immigrant living in Greece pushes a shopping trolley with scrap past a wall covered with street art, in Athens February 2, 2013. Dozens of poor, usually African or Asian migrant, scrap hunters are spotted in rundown areas balancing supermarket trolleys stacked with metal, plastic and paper. Picture taken February 2, 2013. REUTERS/John Kolesidis (GREECE - Tags: BUSINESS EMPLOYMENT SOCIETY IMMIGRATION POVERTY TPX IMAGES OF THE DAY) 

A woman rides an electric bicycle with three children outside a kindergarten in Ruzhou county in China's central Henan province December 17, 2012. The majority of the 24 children aged between two to five who attend the village's kindergarten spend most of their childhood living with their grandparents as their parents seek better working opportunities in big cities like Beijing and Hangzhou. REUTERS/Aly Song (CHINA - Tags: SOCIETY EDUCATION TRANSPORT) 

Young garbage collectors share a moment after the day's work at a garbage dump on the outskirts of Kabul November 15, 2012. REUTERS/Adnan Abidi (AFGHANISTAN - Tags: SOCIETY) 

A migrant construction worker washes outside his dormitory after a working shift in Shanghai November 14, 2012. REUTERS/Aly Song (CHINA - Tags: BUSINESS CONSTRUCTION POLITICS SOCIETY EMPLOYMENT) 

Children stand and sit near a woman looking through rubbish at a garbage dump in Zabbaleen in Cairo October 11, 2012. The Zabbaleen, which means "garbage people", have served as informal garbage collectors for approximately the past 70 to 80 years, living in the nicknamed area "Garbage City". Their community has a population of around 20,000 to 30,000, over 90 percent of which are Coptic Christians. For several generations, the Zabbaleen supported themselves by collecting trash door-to-door from residents for little money and they recycle up to 80 percent of the waste they collect. The neighborhood is also where Coptic Egyptian nun Maggie Gobran, a nominated candidate for the 2012 Nobel Peace prize, dedicated her last 27 years to helping poor children. REUTERS/Asmaa Waguih (EGYPT - Tags: SOCIETY POVERTY) 

A girl sews a plastic rubbish bag in a garbage dump in Zabbaleen in Cairo October 11, 2012. The Zabbaleen, which means "garbage people", have served as informal garbage collectors for approximately the past 70 to 80 years, living in the nicknamed area "Garbage City". Their community has a population of around 20,000 to 30,000, over 90 percent of which are Coptic Christians. For several generations, the Zabbaleen supported themselves by collecting trash door-to-door from residents for little money and they recycle up to 80 percent of the waste they collect. The neighborhood is also where Coptic Egyptian nun Maggie Gobran, a nominated candidate for the 2012 Nobel Peace prize, dedicated her last 27 years to helping poor children. REUTERS/Asmaa Waguih (EGYPT - Tags: SOCIETY POVERTY) 

A woman looks through rubbish in a garbage dump in Zabbaleen in Cairo October 11, 2012. The Zabbaleen, which means "garbage people", have served as informal garbage collectors for approximately the past 70 to 80 years, living in the nicknamed area "Garbage City". Their community has a population of around 20,000 to 30,000, over 90 percent of which are Coptic Christians. For several generations, the Zabbaleen supported themselves by collecting trash door-to-door from residents for little money and they recycle up to 80 percent of the waste they collect. The neighborhood is also where Coptic Egyptian nun Maggie Gobran, a nominated candidate for the 2012 Nobel Peace prize, dedicated her last 27 years to helping poor children. REUTERS/Asmaa Waguih (EGYPT - Tags: SOCIETY POVERTY) 

A child living in the shanty area of al-Dweiqa walks past smouldering rubbish as he makes his way home from school in Cairo October 4, 2012. Egyptian President Mohamed Mursi has won grudging respect from detractors in his first 100 days by sending the army back to barracks faster than anyone expected and raising Egypt's international profile in several newsmaking visits abroad. Yet his political fortunes and those of the Muslim Brotherhood which propelled him to power may well depend on his delivering on more mundane issues such as easing traffic congestion and bread and fuel shortages by October 7 as promised. Picture taken October 4, 2012. To match Analysis EGYPT-MURSI/ REUTERS/Mohamed Abd El Ghany (EGYPT - Tags: POLITICS SOCIETY POVERTY) 

Surinamese native Georgette Adipi of the women's organization Maipafolo works with her solar-powered sewing machine in the Maroon village of Nieuw Aurora, whose inhabitants are descendants of slaves, along the upper Suriname River in district Sipaliwini, September 26, 2012. According to the U.S. Peace Corps, they have partnered with private companies to help bring renewable energy to remote parts of Suriname that have limited access to electricity. Picture taken September 26, 2012. REUTERS/Ranu Abhelakh (SURINAME - Tags: ENERGY POLITICS SOCIETY) 

Children watch television powered by solar energy at Meerwada village of Guna district in the central Indian state of Madhya Pradesh June 18, 2012. Life in the remote Indian village of Meerwada used to grind to a standstill as darkness descended. Workers downed tools, kids strained to see their school books under the faint glow of aged kerosene lamps and adults struggled to carry out the most basic of household chores. The arrival of solar power last year has changed all that. On a humid evening splashed with rain, fans whirr, children sit cross-legged to swat up on their Hindi and delighted people can actually see what they are eating and drinking. Picture taken June 18, 2012. REUTERS/Adnan Abidi (INDIA - Tags: ENERGY SOCIETY ENVIRONMENT BUSINESS)

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Labourer Praveen, 42, carries empty tins to a recycling factory at a slum area in Mumbai July 30, 2012. Praveen said that he carries more than 30 tins at a time and earns around 3500 Indian rupees ($64) per month. REUTERS/Danish Siddiqui (INDIA - Tags: SOCIETY BUSINESS EMPLOYMENT) 

A boy collects plastic materials as he wades in murky waters while surrounded by garbage brought by Tropical Storm Saola, locally named Gener, along a Manila bay July 30, 2012. The Department of Education (DepEd) and local officials announced the suspension of classes in most parts of Metro Manila and some nearby areas on Monday due to heavy rains caused by the storm and the southwest monsoon. The Philippine Atmospheric Geophysical and Astronomical Services Administration said the storm is headed for Taiwan, but warned of rainy weather from the southwest monsoon, local media reported. REUTERS/Romeo Ranoco (PHILIPPINES - Tags: SOCIETY DISASTER ENVIRONMENT) 

A man collects plastic and other recyclable materials from debris in the waters of Manila Bay after tropical storm Saola hit the Philippine capital July 30, 2012. Heavy rains brought by tropical storm Saola pounded the Philippine capital and triggered flooding on Monday, forcing residents of riverside communities to evacuate and seek shelter on higher ground. REUTERS/Erik De Castro (PHILIPPINES - Tags: DISASTER SOCIETY ENVIRONMENT TPX IMAGES OF THE DAY) 

Fisherman Eduardo Diongco, 43, uses a bamboo stick to make shrimp paste before letting it dry under the sun along the coastal area of Paranaque City, Metro Manila June 28, 2012. Shrimp paste, which is a local condiment, is sold for 80 pesos ($1.86) per kilo. REUTERS/Romeo Ranoco (PHILIPPINES - Tags: SOCIETY BUSINESS) 

A ragpicker smiles as she collects recyclables at a dump yard on World Environment Day in New Delhi June 5, 2012. According to the United Nations Environment Programme website, World Environment Day is celebrated annually on June 5 to raise global awareness and motivate action for environmental protection. REUTERS/Adnan Abidi (INDIA - Tags: ENVIRONMENT SOCIETY) 

A ragpicker holds her mobile phone to show a picture she took at a dump yard on World Environment Day in New Delhi June 5, 2012. According to the United Nations Environment Programme website, World Environment Day is celebrated annually on June 5 to raise global awareness and motivate action for environmental protection. REUTERS/Adnan Abidi (INDIA - Tags: ENVIRONMENT SOCIETY)