What is the name of your organization?
Hanai Kaiaulu
What is the name of your solution?
Sustainable Saturday Circle
Provide a one-line summary or tagline for your solution.
Empowering youth to turn cardboard waste into clean mulch, fresh food, and climate action through a circular economy.
In what city, town, or region is your solution team headquartered?
Nānākuli, HI 96792, USA
In what country is your solution team headquartered?
United States
What type of organization is your solution team?
Nonprofit
Film your elevator pitch.
What specific problem are you solving?
Our community faces a legacy of environmental injustice—home to the island’s only construction and demolition landfill, the PVT landfill, and adjacent to military installations, we’ve endured decades of pollution, poor air quality, and illegal dumping. Native Hawaiian families living here suffer from elevated health risks and lack access to green infrastructure or sustainable waste solutions. Globally, cardboard waste is a mounting issue—over 850 million tons are produced annually, with much ending up in landfills, emitting methane and contributing to climate change. Locally, our landfills are overflowing, disproportionately burdening West Oʻahu. Youth in our schools are deeply aware that their future is tied to the health of their ʻāina. Our solution—Sustainable Saturday—transforms shredded cardboard into mulch for local farms and gardens, reducing methane emissions, improving soil health, and diverting hundreds of pounds of waste each month. By exchanging cardboard for fresh produce, we activate a circular economy rooted in community care and climate action. Our program addresses environmental degradation, uplifts youth leadership, and provides a replicable model for waste diversion and education. It’s not just about waste—it’s about restoring dignity and resilience in a community that has carried more than its share.
What is your solution?
Our solution is called Sustainable Saturday—a community-led program that transforms waste into nourishment for the land and hope for the future. Every week, families drop off their used cardboard, which students shred using electric cardboard shredders. The shredded material becomes mulch—free of plastic and chemicals—that is returned to farms and gardens, helping to restore soil health and reduce the need for harmful herbicides. This practice embodies the Hawaiian value of hoʻihoʻi: returning ʻāina to ʻāina.
In exchange, the community receives fresh, nutrient-rich produce from local farmers, creating a circular economy rooted in aloha and sustainability. The project eliminates plastic from our waste stream, diverts materials from overfilled landfills, and reduces greenhouse gas emissions. It also creates green jobs for youth, giving them paid opportunities to engage in environmental restoration, earn community service hours toward their graduation requirements, and take pride in tangible impact.
Using simple technologies like shredders, electric scissors, and mulch bins, our haumāna learn how waste can become a powerful tool for healing. Through this hands-on experience, they gain skills in leadership, environmental science, and community service—proving that caring for the ʻāina is also caring for ourselves and each other.
Who does your solution serve, and in what ways will the solution impact their lives?
Our solution directly serves Native Hawaiian youth and families in the underserved communities of Nānākuli and Waiʻanae—regions historically impacted by environmental injustice, limited access to green infrastructure, and high rates of poverty. Our youth face systemic barriers in education, career access, and health—often growing up next to landfills and military zones that compromise both land and quality of life.
Sustainable Saturday gives these students hands-on leadership opportunities through environmental service projects that count toward their graduation requirements. It creates green jobs, teaches real-world skills in sustainability, and uplifts their voices as stewards of their community. The program empowers them to see their value, their culture, and their role in protecting the ʻāina.
Families benefit through access to fresh, locally grown produce in exchange for waste cardboard, reducing food insecurity while participating in a circular economy. Local farmers gain nutrient-rich mulch, improving soil and crop quality without chemicals.
By transforming waste into a community asset, our solution fosters environmental pride, cultural reconnection, and collective resilience. It offers dignity and purpose—showing our youth that they are not the problem; they are the solution.
