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Announcement

Reusable Toner Cartridges: Building a practical pathway from disposable printing to reuse

We have added a new circular project “Reusable Toner Cartridges” in our database. The Reusable Toner Cartridges is a long-running initiative by Hara Trading Co., Ltd., based in Kanagawa Ward, Yokohama, that offers a concrete alternative to disposable office printing supplies. Since 1994, the company has been collecting spent genuine toner cartridges, carefully inspecting and…

Jan 28, 2026
Report

YOKOHAMA CIRCULAR FASHION GATHERING: Envisioning the future of textile circulation across industries [EVENT REPORT]

In Yokohama, various initiatives are being promoted to advance resource circulation and build a circular society. As part of these efforts, Circular Yokohama is collaborating with the City of Yokohama on a three-year project titled “Yokohama Low-Carbon Clothing Lifestyle Initiative,” which focuses on the circulation of clothing, an essential part of citizens’ daily lives. As…

Dec 9, 2025
Announcement

Sachiumi Heroes: A Seaweed-Powered Revival from the Ocean Floor

What if seaweed could help save the planet and revitalize the local economy? Meet Sachiumi Heroes, a marine restoration project in Yokohama’s Kanazawa Ward that turns kelp farming into an act of climate action and community empowerment. In Japan, a growing concern called iso-yake, underwater deserts caused by disappearing seaweed beds, has devastated marine ecosystems.…

Aug 5, 2025
qlaytion gallery

National Sun Yat-sen University’s Study Tour on Yokohama’s Decarbonization Initiatives

From July 11 to 12, 2024, a delegation from Taiwan’s National Sun Yat-sen University (hereinafter NSYSU) visited Yokohama for a study tour focused on local decarbonization. This open program, organized by NSYSU, included 14 master’s and doctoral students specializing in public administration, accompanied by two academic staffs. Discussion on Decarbonization with Harch Inc. The tour…

Jul 30, 2024
Story

Regenerative Kelp Farming for Blue Carbon in Yokohama

Trees have the ability to absorb CO2, but did you know that kelp has similar powers too? Kelp can absorb five times as much CO2 as cedar, plus it can grow up to four meters in just four months! Such hidden powers didn’t get unnoticed by Sachiumi Heroes director Tatsunori Tomimoto. Since 2015, Tomimoto has…

Jun 11, 2022
Announcement

Circular Yokohama enters into agreement to promote the circular economy through Living Lab

Circular Yokohama has entered into an agreement with Yokohama City, Yokohama Living Lab Support Office (Representative Director: Yuki Kawahara) and Yokohama Community Design Lab (Representative Directors: Yuki Sugiura and Yuka Mori). The agreement is to promote the circular economy by a public-private partnership through the Living Labs in Yokohama. It aims to contribute to the…

Dec 24, 2021