No one would envy a life of scavenging in Kenya's biggest landfill, but Daniel Kiarie says he would never leave it.

Birds circle overhead and dogs scuffle as the 35-year-old and around 600 people who work here move through the filth of Nairobi, all of them intent on useful finds. Ground-up garbage, from used hospital needles to battered toys, crunches under his feet. Thirty pungent acres stretch out before him at the center of the city's poorest slums.

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In this photo taken Wednesday, Dec. 5, 2018, a man walks on a mountain of plastic bottles as he carries a sack of them to be sold for recycling after weighing them at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

No one would envy a life of scavenging in Kenya's biggest landfill, but Daniel Kiarie says he would never leave it.
In this photo taken Wednesday, Dec. 5, 2018, a man removes trash from a dump truck while another, who scavenges for recyclable materials for a living, looks down from on top of a mountain of garbage at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

As the world meets again to tackle the growing threat of climate change, Africa expects to suffer the most from rising temperatures. And it is least equipped to fight back.
In this photo taken Wednesday, Dec. 5, 2018, Peter, 12, right, scavenges pieces of paper and card from garbage for a living from amongst the garbage at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

The fastest-growing regions for waste generation are sub-Saharan Africa and South Asia, where it is expected to triple and double, respectively, by 2050, the World Bank said in a September report. By then, the regions will be producing 35 percent of the world's trash.
In this photo taken Wednesday, Dec. 5, 2018, a man who scavenges recyclable materials from garbage for a living takes a break to eat a piece of roasted corn as his friend, right, continues working at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

Safe, sustainable solid waste management could be an engine for economic growth, Sales said. Recycling and innovative products could create jobs while addressing social and environmental issues.
In this photo taken Wednesday, Dec. 5, 2018, a man who scavenges for pieces of plastic for a living walks across a mountain of garbage at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

Transitioning to a greener economy and sustainable waste management will require informal workers like Kiare to become part of a recognized system, following health and environmental guidelines and receiving stable incomes and benefits in return.
In this photo taken Wednesday, Dec. 5, 2018, people who scavenge recyclable materials for a living stand next to a mechanical digger as it adds newly-dumped trash on top of a mountain of garbage at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

The African Union has said member countries should divert 50 percent of the waste they produce to recycling, reuse and recovery by 2030. Currently, the continent recycles only 4 percent.
In this photo taken Wednesday, Dec. 5, 2018, a woman who scavenges recyclable materials from garbage for a living carries a sack at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

Kiare's previous job as a day laborer in construction paid him $5 but he would go without work for long periods, which almost got him evicted. Now he can take home between $10 and $50 a day from recycling. He has moved into a bigger house and is now married with three children.
In this photo taken Wednesday, Dec. 5, 2018, two young boys build a small tower from plastic containers in the trash as a game, while their parents work to scavenge recyclable materials, at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

This version corrects consultant's last name to Sales.
In this photo taken Wednesday, Dec. 5, 2018, a man who scavenges for recyclable materials for a living walks across a sea of garbage at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

In this photo taken Wednesday, Dec. 5, 2018, a man who scavenges for recyclable materials for a living walks across a sea of garbage at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)
In this photo taken Wednesday, Dec. 5, 2018, a young girl who scavenges for recyclable materials for a living runs through a mound of sorted plastic bottles at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

In this photo taken Wednesday, Dec. 5, 2018, a young girl who scavenges for recyclable materials for a living runs through a mound of sorted plastic bottles at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)
In this photo taken Wednesday, Dec. 5, 2018, a man who scavenges for recyclable materials for a living takes a break on top of a hill of garbage at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

In this photo taken Wednesday, Dec. 5, 2018, a man who scavenges for recyclable materials for a living takes a break on top of a hill of garbage at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)
In this photo taken Wednesday, Dec. 5, 2018, a young boy who scavenges for recyclable materials for a living throws a rock in the air to pass the time as he takes a break while sitting on top of a mountain of garbage at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

In this photo taken Wednesday, Dec. 5, 2018, a young boy who scavenges for recyclable materials for a living throws a rock in the air to pass the time as he takes a break while sitting on top of a mountain of garbage at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)
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In this photo taken Wednesday, Dec. 5, 2018, a man walks on a mountain of plastic bottles as he carries a sack of them to be sold for recycling after weighing them at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

No one would envy a life of scavenging in Kenya's biggest landfill, but Daniel Kiarie says he would never leave it.

In this photo taken Wednesday, Dec. 5, 2018, a man removes trash from a dump truck while another, who scavenges for recyclable materials for a living, looks down from on top of a mountain of garbage at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

As the world meets again to tackle the growing threat of climate change, Africa expects to suffer the most from rising temperatures. And it is least equipped to fight back.

In this photo taken Wednesday, Dec. 5, 2018, Peter, 12, right, scavenges pieces of paper and card from garbage for a living from amongst the garbage at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

The fastest-growing regions for waste generation are sub-Saharan Africa and South Asia, where it is expected to triple and double, respectively, by 2050, the World Bank said in a September report. By then, the regions will be producing 35 percent of the world's trash.

In this photo taken Wednesday, Dec. 5, 2018, a man who scavenges recyclable materials from garbage for a living takes a break to eat a piece of roasted corn as his friend, right, continues working at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

Safe, sustainable solid waste management could be an engine for economic growth, Sales said. Recycling and innovative products could create jobs while addressing social and environmental issues.

In this photo taken Wednesday, Dec. 5, 2018, a man who scavenges for pieces of plastic for a living walks across a mountain of garbage at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

Transitioning to a greener economy and sustainable waste management will require informal workers like Kiare to become part of a recognized system, following health and environmental guidelines and receiving stable incomes and benefits in return.

In this photo taken Wednesday, Dec. 5, 2018, people who scavenge recyclable materials for a living stand next to a mechanical digger as it adds newly-dumped trash on top of a mountain of garbage at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

The African Union has said member countries should divert 50 percent of the waste they produce to recycling, reuse and recovery by 2030. Currently, the continent recycles only 4 percent.

In this photo taken Wednesday, Dec. 5, 2018, a woman who scavenges recyclable materials from garbage for a living carries a sack at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

Kiare's previous job as a day laborer in construction paid him $5 but he would go without work for long periods, which almost got him evicted. Now he can take home between $10 and $50 a day from recycling. He has moved into a bigger house and is now married with three children.

In this photo taken Wednesday, Dec. 5, 2018, two young boys build a small tower from plastic containers in the trash as a game, while their parents work to scavenge recyclable materials, at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

This version corrects consultant's last name to Sales.

In this photo taken Wednesday, Dec. 5, 2018, a man who scavenges for recyclable materials for a living walks across a sea of garbage at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

In this photo taken Wednesday, Dec. 5, 2018, a man who scavenges for recyclable materials for a living walks across a sea of garbage at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

In this photo taken Wednesday, Dec. 5, 2018, a young girl who scavenges for recyclable materials for a living runs through a mound of sorted plastic bottles at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

In this photo taken Wednesday, Dec. 5, 2018, a young girl who scavenges for recyclable materials for a living runs through a mound of sorted plastic bottles at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

In this photo taken Wednesday, Dec. 5, 2018, a man who scavenges for recyclable materials for a living takes a break on top of a hill of garbage at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

In this photo taken Wednesday, Dec. 5, 2018, a man who scavenges for recyclable materials for a living takes a break on top of a hill of garbage at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

In this photo taken Wednesday, Dec. 5, 2018, a young boy who scavenges for recyclable materials for a living throws a rock in the air to pass the time as he takes a break while sitting on top of a mountain of garbage at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

In this photo taken Wednesday, Dec. 5, 2018, a young boy who scavenges for recyclable materials for a living throws a rock in the air to pass the time as he takes a break while sitting on top of a mountain of garbage at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

"This is like any other job," Kiarie said. "I would not leave it for a cozy office." In blue overalls, he oversees a hill of plastics he has salvaged to sell to recycling companies. "And I am not mad."

In this photo taken Wednesday, Dec. 5, 2018, a man walks on a mountain of plastic bottles as he carries a sack of them to be sold for recycling after weighing them at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

In this photo taken Wednesday, Dec. 5, 2018, a man walks on a mountain of plastic bottles as he carries a sack of them to be sold for recycling after weighing them at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

As the world meets again to tackle the growing threat of climate change, Africa expects to suffer the most from rising temperatures. And it is least equipped to fight back.

How the continent will tackle the solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question for environmentalists and governments alike.

Most African countries lack the resources needed to process the growing amount of solid waste, said Maria Leonor Sales, a consultant with the African Development Bank. Nineteen of the world's 50 biggest dumpsites are on the continent, according to the Environmental Justice Atlas.

In this photo taken Wednesday, Dec. 5, 2018, a man removes trash from a dump truck while another, who scavenges for recyclable materials for a living, looks down from on top of a mountain of garbage at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

In this photo taken Wednesday, Dec. 5, 2018, a man removes trash from a dump truck while another, who scavenges for recyclable materials for a living, looks down from on top of a mountain of garbage at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

The fastest-growing regions for waste generation are sub-Saharan Africa and South Asia, where it is expected to triple and double, respectively, by 2050, the World Bank said in a September report. By then, the regions will be producing 35 percent of the world's trash.

Much of the waste in low-income countries, about 90 percent, is openly dumped or burned. That contributes to worsening air quality while the poor are most affected, the World Bank said.

The burning of waste is a key contributor to climate change. In 2016, 5 percent of global emissions were generated from solid waste management, excluding transportation, the bank's report said.

In this photo taken Wednesday, Dec. 5, 2018, Peter, 12, right, scavenges pieces of paper and card from garbage for a living from amongst the garbage at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

In this photo taken Wednesday, Dec. 5, 2018, Peter, 12, right, scavenges pieces of paper and card from garbage for a living from amongst the garbage at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

Safe, sustainable solid waste management could be an engine for economic growth, Sales said. Recycling and innovative products could create jobs while addressing social and environmental issues.

But governments would have to sign on and recognize the value of landfill pickers like Kiarie.

"Perceptions are one of the main challenges as people do not view waste as a resource," said Catherina Schenck, a professor with the University of the Western Cape in South Africa who has researched waste pickers. "This includes the policymakers down to the consumers."

In this photo taken Wednesday, Dec. 5, 2018, a man who scavenges recyclable materials from garbage for a living takes a break to eat a piece of roasted corn as his friend, right, continues working at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

In this photo taken Wednesday, Dec. 5, 2018, a man who scavenges recyclable materials from garbage for a living takes a break to eat a piece of roasted corn as his friend, right, continues working at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

Transitioning to a greener economy and sustainable waste management will require informal workers like Kiare to become part of a recognized system, following health and environmental guidelines and receiving stable incomes and benefits in return.

Experts say recycling companies then can be more efficient and have a guaranteed supply of raw materials.

Africa has the opportunity to unlock at least $8 billion every year in resource value into the economy by changing the way we think about waste, said Professor Linda Godfrey, an expert on waste management with the South Africa-based Council for Scientific and Industrial Research.

In this photo taken Wednesday, Dec. 5, 2018, a man who scavenges for pieces of plastic for a living walks across a mountain of garbage at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

In this photo taken Wednesday, Dec. 5, 2018, a man who scavenges for pieces of plastic for a living walks across a mountain of garbage at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

The African Union has said member countries should divert 50 percent of the waste they produce to recycling, reuse and recovery by 2030. Currently, the continent recycles only 4 percent.

Unfortunately, investment in such projects in Africa is still seen as high-risk by the private sector, Godfrey said. She said strong political will is needed.

Kiarie knows the risks of his current work. Landslides in dumps can be deadly. The threat of injury or infection is high. The landfill where he roams, Dandora, was deemed full in 2001. Yet it continues to operate, supporting people from the bottom rungs of Nairobi's economy.

In this photo taken Wednesday, Dec. 5, 2018, people who scavenge recyclable materials for a living stand next to a mechanical digger as it adds newly-dumped trash on top of a mountain of garbage at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

In this photo taken Wednesday, Dec. 5, 2018, people who scavenge recyclable materials for a living stand next to a mechanical digger as it adds newly-dumped trash on top of a mountain of garbage at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

Kiare's previous job as a day laborer in construction paid him $5 but he would go without work for long periods, which almost got him evicted. Now he can take home between $10 and $50 a day from recycling. He has moved into a bigger house and is now married with three children.

Most Kenyans, who look down on those who work in the country's sprawling landfills, live below $2 a day.

"Nowadays I don't hear from the landlord," he said.

In this photo taken Wednesday, Dec. 5, 2018, a woman who scavenges recyclable materials from garbage for a living carries a sack at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

In this photo taken Wednesday, Dec. 5, 2018, a woman who scavenges recyclable materials from garbage for a living carries a sack at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

This version corrects consultant's last name to Sales.

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In this photo taken Wednesday, Dec. 5, 2018, two young boys build a small tower from plastic containers in the trash as a game, while their parents work to scavenge recyclable materials, at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

In this photo taken Wednesday, Dec. 5, 2018, two young boys build a small tower from plastic containers in the trash as a game, while their parents work to scavenge recyclable materials, at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

 In this photo taken Wednesday, Dec. 5, 2018, a man who scavenges for recyclable materials for a living walks across a sea of garbage at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

In this photo taken Wednesday, Dec. 5, 2018, a man who scavenges for recyclable materials for a living walks across a sea of garbage at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

 In this photo taken Wednesday, Dec. 5, 2018, a young girl who scavenges for recyclable materials for a living runs through a mound of sorted plastic bottles at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

In this photo taken Wednesday, Dec. 5, 2018, a young girl who scavenges for recyclable materials for a living runs through a mound of sorted plastic bottles at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

 In this photo taken Wednesday, Dec. 5, 2018, a man who scavenges for recyclable materials for a living takes a break on top of a hill of garbage at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

In this photo taken Wednesday, Dec. 5, 2018, a man who scavenges for recyclable materials for a living takes a break on top of a hill of garbage at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

 In this photo taken Wednesday, Dec. 5, 2018, a young boy who scavenges for recyclable materials for a living throws a rock in the air to pass the time as he takes a break while sitting on top of a mountain of garbage at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)

In this photo taken Wednesday, Dec. 5, 2018, a young boy who scavenges for recyclable materials for a living throws a rock in the air to pass the time as he takes a break while sitting on top of a mountain of garbage at the dump in the Dandora slum of Nairobi, Kenya. As the world meets again to tackle the growing threat of climate change, how the continent tackles the growing solid waste produced by its more than 1.2 billion residents, many of them eager consumers in growing economies, is a major question in the fight against climate change. (AP PhotoBen Curtis)