A boy carries empty sacks after bringing different types of plastic materials to a recycling station in Khartoum North April 16, 2015. People bring bottles and other plastic materials to the station for recycling, and get paid in return. (Photo by Mohamed Nureldin Abdallah/Reuters)

A man brings plastic materials to a recycling station in Khartoum North April 16, 2015. (Photo by Mohamed Nureldin Abdallah/Reuters)

Boys wait next to plastic materials they brought to a recycling station in Khartoum North April 16, 2015. (Photo by Mohamed Nureldin Abdallah/Reuters)

Men load a truck with plastic materials they brought to a recycling station in Khartoum North April 16, 2015. (Photo by Mohamed Nureldin Abdallah/Reuters)

A woman brings plastic materials to a recycling station in Khartoum North April 16, 2015. (Photo by Mohamed Nureldin Abdallah/Reuters)

A boy walks next to plastic bottles waiting to be recycled at a recycling station in Khartoum North April 16, 2015. (Photo by Mohamed Nureldin Abdallah/Reuters)

A man brings plastic materials to a recycling station in Khartoum North April 16, 2015. (Photo by Mohamed Nureldin Abdallah/Reuters)

A man weighs a sack of plastic materials after bringing them to a recycling station in Khartoum North April 16, 2015. (Photo by Mohamed Nureldin Abdallah/Reuters)

People bring a sack of plastic materials to a recycling station in Khartoum North April 16, 2015. (Photo by Mohamed Nureldin Abdallah/Reuters)

People push an empty wheelbarrow after deposing plastic materials at a recycling station in Khartoum North April 16, 2015. (Photo by Mohamed Nureldin Abdallah/Reuters)

A man weighs a sack of plastic materials after bringing them to a recycling station in Khartoum North April 16, 2015. (Photo by Mohamed Nureldin Abdallah/Reuters)

A man weighs plastic materials after bringing them to a recycling station in Khartoum North April 16, 2015. (Photo by Mohamed Nureldin Abdallah/Reuters)

A man weighs plastic materials after bringing them to a recycling station in Khartoum North April 16, 2015. (Photo by Mohamed Nureldin Abdallah/Reuters)

A man waits near different types of plastic materials after bringing them to a recycling station in Khartoum North April 16, 2015. (Photo by Mohamed Nureldin Abdallah/Reuters)

A man waits near different types of plastic materials after bringing them to a recycling station in Khartoum North April 16, 2015. (Photo by Mohamed Nureldin Abdallah/Reuters)

Men load a truck with different types of plastic materials after bringing them to a recycling station in Khartoum North April 16, 2015. (Photo by Mohamed Nureldin Abdallah/Reuters)