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The International Forum for Sustainable Asia and the Pacific (ISAP) is an international forum where leading experts, international organisations, governments, businesses, and NGOs gather to discuss various aspects of sustainable development in Asia and the Pacific. ISAP is held annually in Japan to promote information sharing and strengthen...

Accelerating urban population concentration across the world has both positive and negative social-ecological consequences. Countries facing serious negative consequences like Japan need to explore enhanced deurbanization pathways, e.g., highlighting high quality of life in rural areas, to achieve a more desirable urban-rural population balance...

“Paris at 50 °C” is a mission that envisions an extreme heatwave scenario in which temperatures in Paris could reach 50 °C, aiming to prepare adaptive measures in advance. This commentary argues that the initiative provides valuable insights for other cities in planning and implementing climate change adaptation strategies. The “Paris at 50 °C”...

From "Islands of Excellence" to a "Sea of Change": How ASEAN's Secondary Cities are Localising the SDGs in the region As the ASEAN region rapidly urbanises, the focus often falls on its mega-cities. However, a quiet transformation is underway in the region’s secondary cities -- the agile urban centres that are proving to be fertile ground for...

The open burning of municipal solid waste (MSW) remains a prevalent yet underreported source of greenhouse gas (GHG) and air pollutant emissions, particularly in developing and transition economies. This study updates the 2006 IPCC activity inventory methods and subsequent refinements to quantify emissions from open waste burning (OWB) in Asian...

2025年11月10日～22日にかけて、ブラジル北部のアマゾン河口に位置するパラー州ベレンで、国連気候変動枠組条約（UNFCCC）第30回締約国会議（COP30）が開催されました。COP（コップ）は「Conference of Parties」の略で、同条約に署名した締約国「Parties」が集まり、さらなるルールを交渉したり、これまで合意したことの実施状況を確認したりする国際会議です。パリ協定の締約国会議（CMA）もCOPと同時並行に開催されました。今回は、30回目のCOP、そして2015年のCOP21でパリ協定（条約より具体的な取り決め）が採択されてから10年の節目の年にあたります。この間、気候変動は想定よりも早く進行し、大排出量国に新興国が加わり...

This report provides a baseline assessment of Cambodia’s informal waste sector, with a focus on Phnom Penh and Battambang. Informal waste workers, including street pickers, door-to-door collectors, pickers at landfills and junkshop operators, play a critical yet undervalued role in the country’s waste management system. They are responsible for a...

This report evaluates a pilot project in Padang, Indonesia, that introduced the digital application to modernise community-based waste banks. The study explores how digital transformation can improve operational efficiency, data accuracy, and transparency within a circular economy framework. While the initiative successfully digitised thousands of...

Many cities have integrated health co-benefits into their climate plans to address cost concerns and build multi-stakeholder support for resilient, net-zero transitions. While some studies have demonstrated that cities vary in how much they link health and climate, few have examined why this is the case. This study fills this gap by using 16...

2025年9月25日、習近平国家主席は国連気候野心サミットにおいて、2035年に向けたNDC目標として、風力・太陽光発電設備容量を36億kW以上に拡大し、非化石エネルギー比率を30%以上に引き上げるという野心的な目標を宣言した。この目標は、単なる数値目標ではなく、中国がクリーンエネルギー転換において世界をリードする決意を示すものだ。