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International Court of Justice Advisory Opinion on Climate Change Obligations and Its Implications for Investment Policy-making

Join IISD’s webinar on October 29 as we unpack the International Court of Justice’s (ICJ) landmark advisory opinion on states’ obligations to tackle climate change—and its implications for climate action, economic governance, and investment reform.

Webinar October 29, 2025

Interoperability or Fragmentation? The next test for border carbon adjustments

A multitude of different systems for measuring, reporting, and verifying embedded emissions at the border would be a nightmare scenario. Aaron Cosbey explores options for making border carbon adjustment regimes work together.

Policy Analysis October 29, 2025

Tax Considerations for Critical Minerals Value Addition

This report examines the fiscal and non-fiscal conditions that can support in-country value addition of critical minerals, drawing on the experiences of resource-rich countries.

Report October 29, 2025

Nature-Based Infrastructure 5-Week Live Program 2025

The interactive 5-Week Live Program about nature-based infrastructure (NBI) is back this autumn, helping investors, policy-makers, infrastructure planners, and other stakeholders to make the case for building with nature.

Webinar October 28, 2025

Can subsidies support nature instead of destroying it?

What if we phased out agrochemical and fossil fuel subsidies and spent the money on healthier things?

IISD in the news October 28, 2025

COFFIS at COP 30

At COP 30 in Belém, the Coalition on Phasing Out Fossil Fuel Incentives including Subsidies (COFFIS) is advancing its efforts to phase out fossil fuel subsidies

Initiatives October 27, 2025

How Border Carbon Adjustments Can Safeguard the Interests of Developing Countries

Border carbon adjustments raise tough questions about their impact on developing economies. Ieva Baršauskaitė and Antoine Bonnet explore how to make them a driver of a fair and inclusive transition.

Policy Analysis October 23, 2025

Common Minimum Standards for the National Inventories of Fossil Fuel Subsidies

Agreed common minimum standards for COFFIS members when developing national subsidy inventories

Initiatives October 22, 2025

Major Projects Office can't back up its boss' claim Trans Mountain helps fight climate change

The Major Projects Office can't substantiate its boss' claim that the Trans Mountain pipeline helps fight climate change. Sustainability experts, including IISD Senior Associate Aaron Cosbey, say it's no surprise the claim can't be substantiated.

IISD in the news October 22, 2025

Delivering Transformative Change and Multiple Benefits

This brief outlines the potential for nature-based solutions to deliver transformative change and multiple benefits to enhance biodiversity, strengthen climate resilience, and contribute to the achievement of the Sustainable Development Goals.

Brief October 22, 2025

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