Josue Salazar (19), a student of agronomy, collects discarded tyres in Masaya's municipal garbage dump, Nicaragua, May 7, 2015. Salazar recycles used tyres to make bird figurines and sofas to sell in his shop located on the Panamerican highway. (Photo by Oswaldo Rivas/Reuters)

Josue Salazar (19), a student of agronomy, collects discarded tyres in Masaya's municipal garbage dump May 7,2015. (Photo by Oswaldo Rivas/Reuters)

Juan Salazar (15), collects discarded tyres in Masaya's municipal garbage dump May 7, 2015. (Photo by Oswaldo Rivas/Reuters)

A discarded tyre is used as a sign that reads “We are still useful” in a shop located on the Panamerican highway near Catarina town May 8, 2015. (Photo by Oswaldo Rivas/Reuters)

Bird figurines made of recycled tyres are on display in a shop located on the Panamerican highway near Catarina town May 8, 2015. Picture taken May 8, 2015. (Photo by Oswaldo Rivas/Reuters)

Josue Salazar (19), a student of agronomy, cuts a recycled tyre to make a bird figurine at a shop near Catarina town May 8, 2015. (Photo by Oswaldo Rivas/Reuters)

A man places bird figurines made of recycled tyres in a shop located on the Panamerican highway near Catarina town May 8, 2015. (Photo by Oswaldo Rivas/Reuters)

Carlos Salazar (10), places bird figurines made of recycled tyres in a shop located on the Panamerican highway near Catarina town May 7, 2015. (Photo by Oswaldo Rivas/Reuters)

Carlos Salazar (10), paints a pot made of recycled tires in a shop located on the Panamerican highway near Catarina town May 7, 2015. (Photo by Oswaldo Rivas/Reuters)

Josue Salazar (19), a student of agronomy, searches for a recycled tyre to make a bird figurine at a shop near Catarina town May 7,2015. Salazar recycles used tyres to make bird figurines and sofas to sell in his shop located on the Panamerican highway. (Photo by Oswaldo Rivas/Reuters)

Carlos Salazar (10), paints a pig figurine made of concrete in a shop located on the Panamerican highway near Catarina town May 7, 2015. (Photo by Oswaldo Rivas/Reuters)

Josue Salazar (19), a student of agronomy, places bird figurines made of recycled tyres in a shop located on the Panamerican highway near Catarina town May 7, 2015. (Photo by Oswaldo Rivas/Reuters)

Juan Salazar (15), paints a bird figurine made of recycled tyres to be sold in a shop located on the Panamerican highway near Catarina town May 7, 2015. (Photo by Oswaldo Rivas/Reuters)

Francisco Salazar is reflected in a mirror made of recycled tyres in a shop located on the Panamerican highway near Catarina town May 7, 2015. (Photo by Oswaldo Rivas/Reuters)

Sofas made of recycled tyres are seen in a shop located on the Panamerican highway near Catarina town May 7, 2015. Picture taken May 7, 2015. (Photo by Oswaldo Rivas/Reuters)

Birds made of recycled tires are displayed in a shop located on the Panamerican highway near Catarina town, May 7, 2015. (Photo by Oswaldo Rivas/Reuters)