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Refuse-Derived Fuel (RDF) is gaining popularity in Indonesia as a promising solution for processing large volumes of municipal solid waste (MSW), extending landfill lifespans, and facilitating both material and thermal recycling. The quantity and quality of RDF are critically dependent on the input waste composition and the selection of materials...

Critical energy transition minerals (CETMs) are vital for clean energy technologies, but their life cycle is associated with substantial environmental, social, and governance risks. These risks disproportionately affect local communities and countries in the Global South, where much of CETM extraction takes place. Despite bearing the burden of...

At Osaka Expo 2025, EU pavillion organised nine in-person events over three days on circular economy. On September 23, 2025, the event organized a session on " Plastic planet: Innovating solutions for a cleaner tomorrow". Hotta of IGES was a panelist of the session. The session is available in Youtube.

Microplastic pollution poses a significant threat to marine ecosystems, with land-based activities being the primary source. Wastewater treatment plants (STPs) and river systems act as key pathways, concentrating and transporting these plastics from urban areas to the sea. This presentation establishes a direct link between these sources and their...

Microplastic pollution poses a significant threat to marine ecosystems, with land-based activities being the primary source. Wastewater treatment plants (STPs) and river systems act as key pathways, concentrating and transporting these plastics from urban areas to the sea. This presentation establishes a direct link between these sources and their...

This presentation outlines an initiative applying behavioral insights (BI) to reduce single-use plastics (SUPs) across the Asia-Pacific region. Phase I (2022-2024) implemented pilot projects in Indonesia, Thailand, Vietnam, and the Philippines. Departing from traditional "rational choice" theories, the project utilized the "Levers of Behaviour...

This pamphlet introduces the latest activities of Kitakyushu Urban Centre.

北九州アーバンセンターの活動を紹介する2025年発行のパンフレットです。

Plastic pollution in river systems is a growing concern, especially in the Mekong Delta, where complex tidal dynamics facilitate downstream transport of plastic waste into the marine environment. This study assessed the density, composition, and temporal variability of floating plastic waste in the Hau River, approximately 30 km upstream of the...

Southeast and East Asia play a pivotal role in global efforts to end plastic pollution. ASEAN Plus Three countries are at the heart of this region, represented by the 10 Member States of the Association of Southeast Asian Nations, Japan, Korea and the People’s Republic of China (hereafter, China). This region has become a hotspot for plastic...