In Japan, the youth group donated the proceeds from their recycling to single-mother families with hospitalized children through the NPO Keep Mama Smiling. Credit: Karuta Yamamoto.

By Karuta Yamamoto
TOKYO, Japan, Mar 6 2026 (IPS)

From the beginning, this project was a collaboration between student teams in Japan and Korea. Although we live in different countries, we shared one common question: How can young people reduce waste while supporting families facing food insecurities?
Our journey began with a problem we could see clearly in our communities.

In Japan, food insecurity often hides behind quiet dignity. According to a recent survey by Save the Children Japan, over 90 percent of low-income households with children reported struggling to afford enough food, with many families forced to cut back on even basic staples such as rice due to rising prices.

The Japan and Korean team of all 11 students presented ‘The Co-creation of Youth from Waste to Hope’ at the 9th Tokyo International Conference on African Development (TICAD 9) Thematic Event. Credit: Ticad 9

The Japanese team leader, Karuta Yamamoto, and the Korean team presented ‘What we want in Africa for the future’ at the Seoul National University, Seoul, Korea, during TICAD 9.

Japan and Korea Team Leader, Karuta Yamamoto and Emma Shin, in an interview with UNFPA Seoul. Credit: Karuta Yamamoto

The Korean team set up a shop at a bazaar at Arumjigi, Seoul, Korea. Credit: Karuta Yamamoto

Single-parent households—most led by mothers—face especially high levels of food hardship and are often compelled to make painful decisions about how limited budgets are spent. For some families, this means choosing between symbolic moments of celebration and everyday nutrition. A ¥3,000 Christmas cake may represent joy for one household, but for another, that same amount must stretch to five kilograms of rice—enough to feed a family for several days.

At the same time, vast amounts of edible food are wasted in Japan. Official statistics show that millions of tons of food are discarded annually in Japan, much of it still edible. Seasonal items such as Christmas cakes, which cannot be sold after December 25, are frequently thrown away. This contrast—waste on one side and hunger on the other—reflects the global challenge addressed by SDG 12: Responsible Consumption and Production.

As students in Japan and Korea, we asked ourselves, “What role can we play in closing this gap?”

We knew that awareness alone would not change habits. enough. Instead of telling people to feel guilty about food waste, we decided to take action together.

We began locally, but with shared purpose.

In Japan, students at Dalton Tokyo Senior High School noticed that mandarin oranges—one of the country’s most common fruits—often go uneaten, with peels and seeds discarded. In Korea, students identified a different issue: more than 150,000 tons of used coffee grounds are discarded each year, contributing to landfill emissions and greenhouse gas emissions.

Different materials.

One shared goal.

Rather than seeing waste as the end of a product’s life, we saw it as a beginning.

Research shows that citrus peels contain essential oils that can be used in soaps and cleaning products. Studies in Korea also demonstrate that spent coffee grounds can be processed into sustainable biomaterials suitable for eco-friendly design and 3D printing. Plantable seed paper—made from recycled paper embedded with seeds—is another example of how waste can be transformed into something regenerative.

Inspired by these ideas, our student teams turned theory into action.

Japanese students created handmade soaps using discarded citrus peels.

Handmade soaps using discarded citrus peels. Credit: Karuta Yamamoto

The soaps ready for sale. Credit: Karuta Yamamoto

Korean students developed 3D-printed clip-on vases incorporating recycled coffee grounds, encouraging people to reuse empty bottles and cups instead of discarding them.

The Korean students developed 3D-printed clip-on vases incorporating recycled coffee grounds. Credit: Karuta Yamamoto

They also produced plantable seed paper from recycled materials, allowing waste to literally grow into flowers and herbs.

Korean students produced plantable seed paper from recycled materials. Credit: Karuta Yamamoto.

These products were not sold as charity goods. Instead, they were shared as examples of responsible consumption—showing that waste can have a second life through our design. Through this work, we directly supported SDG 12: Responsible Consumption and Production, which calls for reducing waste through recycling and reuse, and SDG 13: Climate Action, by lowering emissions through upcycling.

At the same time, the funds raised had a clear purpose.

The profits were used to support families facing food insecurity. In Japan, we donated to single-mother families with hospitalized children through the NPO Keep Mama Smiling (see main photo for the opinion piece).

They also provided essential cooking ingredients to the Karuizawa Food Bank. By connecting environmental action with helping families in need, our project also supported SDG 2: Zero Hunger.

The group provided cooking ingredients to the Karuizawa Food Bank. Credit: Karuta Yamamoto

Through this experience, we learned that caring for the planet and caring for people are not separate goals. Waste reduction and hunger relief became connected in one youth-led effort—turning environmental responsibility into community solidarity.

But our collaboration did not stop in Japan and Korea.

Through a partnership with the OneSmile Foundation—an organization that transforms digital smiles into donations—we connected our local initiatives to a global challenge. During workshops, we learned that school meal donations in Lesotho had stopped the previous year. Without reliable meals, many students were struggling to focus in class.

Together, our Japanese and Korean teams raised over 300,000 Japanese yen.

The Japanese and Korean teams celebrate their fundraising efforts. Credit: Karuta Yamamoto

Working with local partners in Lesotho, we organized a community-based food support initiative at Rasetimela High School, which serves 863 students. School feeding programs play a critical role in Lesotho, and recent disruptions have left many students more vulnerable to hunger.

Students at Rasetimela High School in Lesotho receive donations of food. Courtesy: Rasetimela High School

Ninety-one of the most vulnerable students were selected through transparent criteria, including those supported by social welfare programs and those who had previously relied on international assistance. Each selected family received staple foods such as rice and corn flour to make a local staple called pap. Distribution was organized near the school to ensure safety and allow parents to collect the supplies securely.

This cross-border effort—connecting students, NGOs, local leaders, and communities—reflects the spirit of SDG 17: Partnerships for the Goals.

Although we live in different countries, climates, and cultures, this experience reshaped how we understand global cooperation. The students in Lesotho were not distant beneficiaries. We became peers in a shared world.

They became peers in a shared world. Courtesy: Rasetimela High School

As young people, we often believe our impact is limited because we do not control large resources. This project challenged that belief. We learned that we can create change by designing solutions, raising awareness, and working together.

We even tried to measure what we called a “Happiness Index” by counting the smiles of students who received support. Those smiles reminded us that sustainability is not only environmental or economic—it is human.

Our experience shows that youth are not just future leaders. We are active contributors today. When creativity meets collaboration, waste can become opportunity, and local action can grow into global solidarity.

Turning waste into hope is not an abstract idea.
It is a choice—and young people are already making it.

Edited by Dr Hanna Yoon

IPS UN Bureau Report

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