Cairo's Zabaleen recycling system
Cairo's Zabaleen built a distributed collection and recycling economy from household routes, family labor, material expertise, animal feeding, workshops, and resale markets. Its recovery rate is widely reported as unusually high but has not been established by a cited citywide mass-flow audit; the better-supported history shows how privatization and the 2009 pig cull weakened livelihoods and material flows while hazardous and gendered work remained concentrated in households.
Governing questionHow can a city recognize and improve a recycling system built through informal household relationships without dispossessing the workers whose livelihoods depend on access to discarded material?
PeriodFrom early twentieth-century household collection through the 2003 privatization and 2009 pig cull, with adaptation and integration evidence through 2016 and a 2025 UN-Habitat synthesis
A route was an asset because a family knew what came after collection
Cairo's Zabaleen system was not one organization. It joined household access, collection routes, family labor, pigs and other livestock, sorting, traders, repair and processing workshops, and manufacturers. Historical and field research distinguishes the predominantly Coptic Zabaleen collectors and recyclers from Wahiya route holders, even though both are often compressed into one public label. The resulting service-and-value chain rested on different rights, jobs, and bargaining positions rather than common ownership of “Cairo's waste.”1
A recovery rate near 80 percent is widely repeated, but it is not a measured citywide result in the identified record. UN-Habitat's 2025 waste-picker report repeats an 80 percent figure and contrasts it with a 20 percent contractor requirement. Its 2011 Cairo report makes the same comparison, yet that report's endnote for an 80–90 percent claim points to Wikipedia and unspecified online sources. The peer-reviewed study that UN-Habitat cites also uses “some 80 percent” without presenting a citywide mass-flow audit. The responsible claim is therefore that multiple sources report unusually high recovery among the waste collected by Zabaleen chains—not that 80 percent has been independently verified for all collectors, fractions, settlements, or years.2
That distinction does not erase the capability. A 2016 value-chain study mapped successive steps for PET bottles and examined plastics, metals, paper, organics, and refuse-derived fuel. It identified source segregation, access to waste, finance, and technical knowledge as high-leverage conditions for further development. The paper drew data and assistance from informal workers, NGOs, GIZ staff, and waste professionals, including a Spirit of Youth leader, so it is an independent scholarly analysis with participant inputs rather than an independent census of every enterprise.3
The chain distributed judgment and burden differently
In Didero's reconstruction of the earlier arrangement, Wahiya route holders retained household fees and sold collection access to Zabaleen families. Men collected from doors; women and smaller children raised pigs and sorted materials close to homes. Paper, glass, scrap metal, manure, pigs, and other fractions then moved through different traders and workshops. Later mechanization and semi-formal companies changed parts of the arrangement without turning it into a single hierarchy.1
The route made repeated local knowledge economically useful: who would provide waste, which fraction had a buyer, what grade a workshop could process, and when an animal or trader made collection worthwhile. Markets coordinated exchanges; families and peers adjusted the work; sorted fractions formed interfaces between collection, processing, and resale. These are organizational inferences from the documented chain, not evidence that every family used the same rules.
The labor division also sets a hard boundary on celebratory accounts. Didero's field study used participant observation and forty interviews across two settlements in 2006 and 2011. Fahmi and Sutton used a small-area survey, open-ended interviews, focus groups, and stakeholder discussions. Both describe women and children doing sorting or animal work in household environments with serious health and safety burdens. Neither design supports a prevalence estimate for all Zabaleen households, a universal gender rule, or a complete accounting of hired workers, injury, child labor, pay, and bargaining power.4
Privatization addressed a capacity problem by reallocating access
The informal system had a real capacity problem. Didero reports that rising waste volumes overtook it in the 1990s. In 2003 Cairo's administration commissioned European multinational firms, legally depriving Zabaleen workers of prior access to the waste on which their income depended. Interviews later found creative adaptation but greater vulnerability, while the reform did not deliver ecological, economic, and social sustainability in the studied account.5
UN-Habitat's 2011 Cairo study describes contractors struggling with access, density, and service in poorer areas while formal and informal systems continued in parallel. It also records subcontracting back to Zabaleen workers and reports that established door-to-door service did not translate smoothly into a container-based regime. Those observations come from an official urban synthesis, a 2008 household survey, named contributors, and earlier literature; they do not establish one uniform outcome across Greater Cairo or independently validate the report's recycling percentages.6
The organizational failure was not that trucks and contracts could do nothing. It was that procurement treated removal as the whole service and legal access as a transferable input. A truck could transport a bag without recreating the route relationship, sorting judgment, animal demand, workshop capacity, and buyer network that determined what happened next. A university-press chapter built around collectors' narratives reaches a compatible but bounded conclusion: attempted partnership with international firms failed amid power asymmetry, while the struggle over waste assets remained unfinished.7
The pig cull broke a material flow that public-health evidence did not justify
On April 29, 2009, Health Minister Hatem al-Gabali announced an immediate national pig cull after meeting President Hosni Mubarak. Egypt's agriculture ministry then estimated a herd of about 250,000. Adel Ishak, a Manshiet Nasser collector and father of ten, described healthy pigs as his family's capital and asked how their value would be replaced.8
The same day, the World Organisation for Animal Health advised governments that the novel A/H1N1 virus was spreading among humans, that there was no evidence of infection in pigs or direct acquisition from pigs, and that culling pigs would not guard against the identified public- or animal-health risks. It recommended surveillance and biosecurity instead.9 The Egyptian order was therefore not merely controversial in hindsight; it conflicted with the international animal-health authority's contemporaneous guidance.
When authorities began removal, an AFP report carried by ABC described 300 to 400 Manshiyet Nasser residents trying to stop the cull and police using rubber bullets and tear gas. The report attributed the estimate and details to on-scene reporting and officials; it is a contemporaneous news account, not a judicial finding about every police action.10
Six months later, Nabil Abu Mazin told humanitarian reporters that his daily collection had fallen from about 1,000 kilograms to 150 because pig farmers had left the market. The same report attributed a figure of 70,000 affected farmers, collectors, and family members to the Association for the Protection of the Environment and recorded that collectors received no pig compensation. These are named participant and NGO estimates, not a government census, but they make the severed incentive legible: organic waste lost a buyer while collection and household income contracted.11
Spirit of Youth's community account says collectors responded by concentrating on non-organic material and proposed source separation as a division of work between Zabaleen recyclers and firms handling organics for compost. It establishes how one community organization framed the adaptation, not how every collector behaved or whether the proposed arrangement prevailed citywide.12 Fahmi and Sutton's field research connects the cull to loss of pig-rearing income, reduced organic collection, and accumulated waste. Vivian Ibrahim's contemporaneous political commentary places the cull within Coptic marginalization and reports public criticism of how pigs were killed. The first is qualitative scholarship; the second is an interpretive account drawing on press reports, not an animal-welfare investigation.13
The animals themselves cannot be reduced to a processing technology. They were raised to turn organics into meat and income, then subjected to a mass cull that the relevant international authority called inappropriate. The located record does not systematically document their living conditions, transport, killing methods, or suffering before and during the cull. That absence limits the nonhuman-life account; it does not turn the burden into zero.
Community organizations made expertise a claim to education and standing
Spirit of Youth says it was officially registered in 2004 to educate and empower young people, sustain recycling enterprises, advocate integration, and provide health access and safer alternatives for children and youth in hazardous work. Because this is the association's own account, it establishes its stated mission and objectives rather than independent program effects.14
The UNESCO Institute for Lifelong Learning describes the Recycling School for Boys as combining plastic recycling with literacy, numeracy, workplace safety, and learning by doing. Its case profile reports that by 2015 the school counted 130 graduates aged nine to seventeen, while also identifying heavy workload as an obstacle. Those counts and success stories derive from a 2015 program case, not a comparison group, an attendance audit, or a study of children who never enrolled.15
Recognition remained partial in the public evidence. A 2025 UN-Habitat report repeats a 2014 account that government efforts beginning in 2013 supplied some collectors with uniforms, vehicles, training, and an apartment-based wage. That box does not document coverage, current terms, payment reliability, route rights, worker control, or outcomes through 2025.16 Formalization may supply legal standing, equipment, and safer work; it may also place contracts with intermediaries, recognize collection while stripping resale value, or leave household sorting outside labor protection.
The design question is therefore not “formal or informal?” It is who controls access, information, and refusal at each link. The value-chain study identifies source segregation and access to waste as leverage points; its recommendations do not establish their effects. Moving dangerous processing out of homes remains a design objective requiring evaluation, not a demonstrated result in the located evidence.3 None of those changes requires treating workers' knowledge as municipal property or treating family poverty as the source of recycling skill.
Comparisons identify questions, not ancestry
The three institution relations are limited analytical comparisons.
South Africa's Treatment Action Campaign
compares how affected people turn technical knowledge into public standing;
Moroccan women's argan cooperatives
compares formalization, gendered labor, and control over value; and
Ushahidi compares ways distributed local knowledge becomes
legible to a wider coordinating system. No cited record establishes influence,
shared origin, equivalence, or transferable results among these institutions.
Work design, productivity, and
automation is an idea
relation used to compare manual sorting, route knowledge, workshops, and
standardized collection. Benefit for all life
is a research-lens relation that widens the ethical question from municipal
service and worker income to households, children, pigs, neighborhoods,
ecosystems, and later generations. Neither is a claim that historical
participants used Atlas categories.17
The comparative fingerprint makes the emphasis explicit
Score 3 marks
delegation, decentralization, and
responsibility,
decision-making, judgment, and bounded
rationality,
cooperation, incentives, and organizational
equilibrium,
work design, productivity, and
automation,
knowledge, expertise, and professional
autonomy, and
innovation, entrepreneurship, and
renewal as defining ideas.
Score 2 marks
authority, legitimacy, and acceptance,
coordination, communication, and common
understanding,
structure, hierarchy, and scale,
measurement, accounting, and control,
governance, stewardship, and
accountability,
culture, informal organization, trust, and
voice, and
organizational ignorance. Measurement is
material because prices, route fees, material grades, collection volumes, and
the disputed recovery percentage all shape the account; the absence of a robust
mass-flow measure is itself consequential.
Score 1 marks
learning, quality, and reliability
and
strategy, competition, and adaptation
as contextual. Score 0 leaves
purpose, mission, and institutional
legitimacy and
executive attention, information, and organizational
sensing
outside the organizing comparison. Zero does not assert historical absence: the
distributed system had no single documented mission or executive whose attention
can stand for the whole network.17
The profile is also an editorial comparison. Authority combines
market-capital, local-federated, and state-bureaucracy; decisions sit in
frontline-local, peer-distributed, and rule-bound-hierarchy loci.
partnership-network describes the distributed family, route, workshop, trader,
association, and public interface, not a single legal title. Coordination uses
markets, mutual-adjustment, teams, and modular-interfaces; knowledge
flows are embedded-practice, peer-networked, and bottom-up. Measurement is
financial, operational, quality, and informal. Learning uses
apprenticeship, market-feedback, and continuous-improvement, while
adaptation combines local-iteration, modular-recombination, and
selection-and-competition.
The named beneficiary groups are workers, customers, communities,
state-and-public, and ecosystems. The recurring failure risks are
financial-extraction, externalized-harm, suppressed-voice, capture, and
fragility. These labels synthesize the cited division of work, rights,
knowledge, exchange, and harm. They are not survey variables, self-descriptions,
or quantitative ratings of present performance.17
Benefits and burdens do not collapse into one recycling percentage
For workers, the direction is mixed: collection and processing sustained livelihoods and enterprise, while field research describes stigmatized, hazardous work, insecure access, and unequal positions. The identified samples do not establish a welfare distribution across settlements, genders, ages, owners, route holders, or hired workers.45
For household customers and public institutions, established door-to-door routes delivered a service that the replacement regime did not smoothly reproduce. The cited record does not support the stronger claim that every dense or poor district was well served before privatization, or that informal collection alone could meet Greater Cairo's rising demand.56
For communities, education and advocacy created capacities alongside sorting, animal care, pollution, and risk in residential space. For ecosystems, the chain returned many fractions to use but also included burning, dumping, household processing, and post-cull organic accumulation. No cited study performs a net lifecycle comparison between Zabaleen chains and contractors or measures neighborhood exposure comprehensively.1313
For nonhuman life, the documented direction is burden: pigs were instrumental to the organic-waste economy and were raised for meat before the state ordered their mass killing. For future generations, direction remains unclear. The sources do not trace inheritance of routes and workshops, long-run education and health, accumulated neighborhood pollution, or durable municipal capacity across generations.918
Paths into deeper study
- Conduct a representative, fraction-by-fraction mass-flow audit that separates collection share from recovery rate and reports settlement, route, season, denominator, and destination.
- Build worker- and community-governed research on pay, route ownership, subcontracting, injury, health, child labor, gender, hired work, refusal, and grievance procedures.
- Audit post-2013 registration, contracts, wages, protective equipment, source separation, route access, and resale rights, including who was excluded or exited the work.
- Compare lifecycle pollution, emissions, dumping, burning, transport, and material substitution without shifting environmental costs into Zabaleen neighborhoods.
- Document animal conditions and the 2009 cull through veterinary, community, and animal-welfare records rather than treating pigs only as organic-waste processors.
- Trace the property, education, health, ecological, and public-capacity effects that pass to later generations.
Source notes
Maike Didero, “Cairo's Informal Waste Collectors: A Multi-Scale and Conflict Sensitive Perspective on Sustainable Livelihoods,” Erdkunde 66, no. 1 (2012), pp. 27–28 and 33–35, journal record; Wael Fahmi and Keith Sutton, “Cairo's Contested Garbage: Sustainable Solid Waste Management and the Zabaleen's Right to the City,” Sustainability 2, no. 6 (2010), pp. 1767–71, especially section 2, publisher full text. Didero combines historical literature with fieldwork; Fahmi and Sutton used a small-area survey, interviews, focus groups, and stakeholder discussions. Neither is a citywide administrative census.
↩ ↩ ↩Alberica Domitilla Bozzi, Including Waste Pickers in Metropolitan Waste Management (UN-Habitat, 2025), Box 4, p. 21, report PDF; Christopher Horwood, Cairo: A City in Transition (UN-Habitat, 2011), pp. 68–72 and endnote 152 at p. 179, report PDF; Fahmi and Sutton, “Cairo's Contested Garbage,” section 2, p. 1771, publisher full text. The 2011 report's endnote expressly points to Wikipedia and unspecified online sources for the 80–90 percent claim. The later repetitions do not supply a representative mass-flow method, denominator audit, or uncertainty range.
↩Remi Jaligot, David C. Wilson, Christopher R. Cheeseman, Berti Shaker, and Joachim Stretz, “Applying Value Chain Analysis to Informal Sector Recycling: A Case Study of the Zabaleen,” Resources, Conservation and Recycling 114 (2016), pp. 80–91, especially abstract, introduction, and stages 1–4, publisher record. Its acknowledgements identify assistance and data from informal workers, NGOs, GIZ staff, and waste professionals and GIZ funding for a field visit.
↩ ↩ ↩Didero, “Cairo's Informal Waste Collectors,” methods at pp. 31–32, labor conditions at pp. 33–34, and post-privatization responses at pp. 36–37, journal record; Fahmi and Sutton, “Cairo's Contested Garbage,” methods and sections 1–2, pp. 1767–71, publisher full text. The studies preserve participant accounts and observed divisions of work but do not quantify prevalence across all settlements.
↩ ↩Didero, “Cairo's Informal Waste Collectors,” abstract and pp. 27–28, 35–40, journal record. Fieldwork comprised twenty interviews and participant observation in Ezbet an-Nakhl in 2006 and twenty open-ended interviews in Manshiet Nasser in 2011; translation, site changes, and purposive qualitative sampling bound generalization.
↩ ↩ ↩Christopher Horwood, Cairo: A City in Transition (UN-Habitat, 2011), “Municipal Solid Waste Management,” pp. 68–72, and Special Feature 2, pp. 150–151, report PDF. The volume combines a 2008 Social Research Center/UN-Habitat household survey with commissioned research, interviews, and secondary sources. It is an official synthesis, not a contractor performance audit.
↩ ↩Wael Fahmi and Keith Sutton, “Cairo's Contested Waste: The Zabaleen's Local Practices and Privatisation Policies,” chapter 9 in Organising Waste in the City (Policy Press, 2013), abstract, DOI. The chapter expressly uses collectors' narratives to examine community mobilization and power asymmetry; its abstract does not quantify outcomes.
↩“Egypt Orders Pig Cull,” AFP report carried by ABC News, April 30, 2009, paragraphs beginning “Egypt has ordered” through Adel Ishak's comments, contemporaneous report (accessed July 14, 2026). The herd count is attributed to Egypt's agriculture ministry and the order to Health Minister Hatem al-Gabali; Ishak's account is participant testimony.
↩World Organisation for Animal Health, “The OIE Strongly Counsels Against the Culling of Pigs,” April 29, 2009, paragraphs beginning “Scientific information” and “The OIE advises Members,” official animal-health guidance (accessed July 14, 2026). This is contemporaneous specialist guidance for the identified H1N1 risk, not an audit of animal conditions in Cairo.
↩ ↩“Cairo Pig-Cull Protests Turn Violent,” AFP report carried by ABC News, May 3, 2009, paragraphs beginning “Egyptian riot police” through “Egypt began the cull,” contemporaneous report (accessed July 14, 2026).
↩“Pig Cull Hits Livelihoods,” IRIN, October 26, 2009, opening paragraphs and sections “Impact on education” and “No compensation for Zabalin,” field report. The New Humanitarian preserves named collector and farmer accounts and attributes the 70,000 figure to a local NGO; those are not representative measurements.
↩Spirit of Youth Association, “Youth for Segregation and Recycling,” project period April 2009–May 2010, sections “Objectives,” “Significance,” and “Methods,” community-controlled project account (accessed July 14, 2026). The page records the association's diagnosis, proposal, and reported activities, not an independent outcome evaluation.
↩Fahmi and Sutton, “Cairo's Contested Garbage,” sections 3–4, pp. 1772–77, publisher full text; Vivian Ibrahim, “Swine Flu Heightens Fever in Egypt's Christian-Muslim Relations,” Sada, October 6, 2009, paragraphs on Manshiyet Nasser, the cull, and reported killing methods, Carnegie commentary. The first is qualitative urban scholarship; the second is signed political interpretation based partly on contemporary press accounts.
↩ ↩Spirit of Youth Association, “About Us,” sections “Our Mission” and “Main Objectives,” community-controlled account (accessed July 14, 2026). It is authoritative for the association's self-description and stated registration date, not for causal impact.
↩UNESCO Institute for Lifelong Learning, “Learning and Earning through Recycling in Cairo,” submitted September 1, 2022, sections on implementation, stakeholders, impacts, and challenges, program case profile (accessed July 14, 2026). The profile identifies its underlying record as a 2015 UIL case and reports program counts and stories without an independent counterfactual evaluation.
↩Bozzi, Including Waste Pickers, Box 4, p. 21, UN-Habitat report. The box attributes the post-2013 recognition details to a 2014 news report; its 2025 publication date does not make those details a current national or citywide implementation audit.
↩The idea-emphasis scores and organizational profile interpret the cited distribution of route access, family work, market exchange, state authority, material knowledge, adaptation, and harm. No cited source validates the Atlas vocabulary as a quantitative scale.
↩ ↩ ↩partnership-networkis a comparative ownership-form label for a network without one owner, and score0means “not an organizing lens in this account,” not “historically absent.”Evidence-role audit: Didero and Fahmi–Sutton provide qualitative field scholarship with bounded sites and samples; Jaligot and colleagues map a value chain with worker, NGO, professional, and development-agency inputs; UN-Habitat provides official syntheses rather than primary municipal audits; Spirit of Youth supplies community-controlled objectives and adaptation claims; UNESCO supplies a program case; contemporary reporting preserves officials' and affected people's statements; and the World Organisation for Animal Health supplies specialist contemporaneous guidance. No identified source provides a representative current audit of recovery, contracts, worker welfare, community control, animal welfare, lifecycle effects, or intergenerational consequences.
↩
Research record
Evidence basis
Claim Cited. Material claims carry source locators; comparative interpretation may still evolve.
Open questions and affected lives
Benefit-to-life status: Seed
- Who receives the environmental and municipal value created by Zabaleen collection and sorting, and who bears the injury, stigma, polluted air, and household exposure?
- How are collection, sorting, animal care, processing, and sales divided among men, women, children, and hired workers, and whose work is missing from enterprise accounts?
- What rights should collectors hold over routes and materials when government, building staff, contractors, and recycling startups compete for valuable waste?
- Can formal integration improve safety, income, and public recognition without destroying the household relationships and material knowledge that make recovery work?
Workers · Mixed Collection, sorting, processing, animal feeding, repair, and trading sustained livelihoods and specialized enterprises in the studied settlements, while workers described or were observed facing stigmatized and hazardous conditions, unequal positions in the chain, and insecure access to waste after privatization. Source Anchored
Customers And Users · Benefit The documented arrangement gave many households door-to-door collection through established routes, while the 2011 UN-Habitat account found that the replacement system did not smoothly reproduce that service, especially in dense areas. Source Anchored
Communities · Mixed Community organizations linked recycling to education, advocacy, and safer work, while field studies located sorting, animal care, and processing in household spaces and described substantial burdens for women and children. Source Anchored
Public Institutions · Mixed Public authorities received collection and material-recovery capacity from the informal network, but privatization and the pig cull disrupted access, livelihoods, and organic-waste handling; later recognition initiatives are documented as partial efforts rather than a completed citywide integration. Source Anchored
Ecosystems · Mixed The documented chain moved paper, metal, plastics, glass, organics, and other fractions toward reuse, processing, animal feed, or resale, while burning, residual dumping, household processing, and post-cull organic accumulation created environmental burdens that the cited sources do not quantify as a net lifecycle effect. Source Anchored
Nonhuman Life · Burden Pigs were used to convert organic waste into household income and meat, then Egypt ordered the national herd killed in 2009 even as the international animal-health authority advised that mass culling would not address the novel H1N1 risk; the public record located here does not establish welfare conditions before or during the cull systematically. Source Anchored
Future Generations · Unclear The cited studies do not measure intergenerational transfers of route rights, workshop assets, education, health burden, neighborhood pollution, or municipal recovery capacity. Research Needed
Structured atlas record
Idea coverage
- Delegation, decentralization, and responsibilityprimary
- Decision making, judgment, and bounded rationalityprimary
- Cooperation, incentives, and organizational equilibriumprimary
- Work design, productivity, and automationprimary
- Knowledge, expertise, and professional autonomyprimary
- Innovation, entrepreneurship, and renewalprimary
- Authority, legitimacy, and acceptancesubstantial
- Coordination, communication, and common understandingsubstantial
- Structure, hierarchy, and scalesubstantial
- Measurement, accounting, and controlsubstantial
- Governance, stewardship, and accountabilitysubstantial
- Culture, informal organization, trust, and voicesubstantial
- Organizational ignorancesubstantial
- Learning, quality, and reliabilitysupporting
- Strategy, competition, and adaptationsupporting
Organizational profile
- Authority sources
- Market Capital, Local Federated, State Bureaucracy
- Decision loci
- Frontline Local, Peer Distributed, Rule Bound Hierarchy
- Ownership forms
- Partnership Network
- Coordination mechanisms
- Markets, Mutual Adjustment, Teams, Modular Interfaces
- Knowledge flows
- Embedded Practice, Peer Networked, Bottom Up
- Measurement modes
- Financial, Operational, Quality, Informal
- Learning modes
- Apprenticeship, Market Feedback, Continuous Improvement
- Adaptation modes
- Local Iteration, Modular Recombination, Selection And Competition
- Beneficiary groups
- Workers, Customers, Communities, State And Public, Ecosystems
- Failure risks
- Financial Extraction, Externalized Harm, Suppressed Voice, Capture, Fragility
Provenance and sources
Online anchors
- https://www.erdkunde.uni-bonn.de/article/view/2698
- https://www.sciencedirect.com/science/article/pii/S0921344916301690
- https://www.mdpi.com/2071-1050/2/6/1765
- https://unhabitat.org/sites/default/files/download-manager-files/1502716316wpdm_Cairo%20-%20a%20City%20in%20Transition.pdf
- https://unhabitat.org/sites/default/files/2025/06/including_waste_pickers.pdf
- https://doi.org/10.1332/policypress/9781447306375.003.0009
- https://www.abc.net.au/news/2009-04-30/egypt-orders-pig-cull/1667152
- https://www.woah.org/en/the-oie-strongly-counsels-against-the-culling-of-pigs/
- https://www.abc.net.au/news/2009-05-03/cairo-pig-cull-protests-turn-violent/1670956
- https://www.thenewhumanitarian.org/news/2009/10/26/pig-cull-hits-livelihoods
- https://carnegieendowment.org/sada/2009/10/swine-flu-heightens-fever-in-egypts-christian-muslim-relations
- https://soyzabaleen.blogspot.com/p/about-us_7.html
- https://soyzabaleen.blogspot.com/p/youth-for-garbage-segregation-and.html
- https://lifelonglearning-toolkit.uil.unesco.org/en/node/142