World’s Youth for Climate Justice (WYCJ) led a years-long global campaign to take climate change and human rights to the International Court of Justice (ICJ) to get an advisory opinion (AO) – and with success! On 23 July 2025, the ICJ delivered a historic climate ruling outlining States' obligations under international law regarding climate change. The Court set out the applicable law governing States' duties to address climate change and the legal consequences of inaction.


Now, on 23 July 2026, we celebrate 1 year of climate justice history with the first ICJ AO-nniversary! On this day, the alliance driving the campaign for climate justice at the world’s highest court is organising multiple online regional sessions around the world in which we look at how the ICJ’s climate ruling has been used so far and also how we can continue to use it to drive climate action worldwide. Join us at this Global AO-Festival!

Let’s celebrate the ICJ AO-nniversary!

Learn more

UNGA Resolution

Learn more

SB64

Learn more

Legal Blog

Learn more

Read our latest blog posts

Campaign News
Santa Marta: Where Climate Advisory Opinions Met Social Movements
Event
Santa Marta: Where Climate Advisory Opinions Met Social Movements
Event
Event
Justice Michael D. Wilson shares statement supporting upcoming UNGA resolution welcoming ICJ AO
News
Justice Michael D. Wilson shares statement supporting upcoming UNGA resolution welcoming ICJ AO
News
News
Vanuatu's Draft Resolution to Implement ICJ Climate Advisory and India
News
Vanuatu's Draft Resolution to Implement ICJ Climate Advisory and India
News
News
Caribbean Civil Society Mobilises for Fossil Fuel Phase-Out: Reflections from Saint Lucia
Event
Caribbean Civil Society Mobilises for Fossil Fuel Phase-Out: Reflections from Saint Lucia
Event
Event
Regional Symposium on Advisory Opinion to Action: Advancing Human Rights and Climate Justice
Event
Regional Symposium on Advisory Opinion to Action: Advancing Human Rights and Climate Justice
Event
Event
Past and Future Strategies for the ICJ Advisory Opinion on Climate Change (Workshop)
Event
Past and Future Strategies for the ICJ Advisory Opinion on Climate Change (Workshop)
Event
Event
ICJ Advisory Opinion on Climate Change: A Legal Perspective with Dr. Justin Sobion
Event
ICJ Advisory Opinion on Climate Change: A Legal Perspective with Dr. Justin Sobion
Event
Event
YUMI – The whole World Documentary
News
YUMI – The whole World Documentary
News
News
WYCJ Publishes a Briefing Note on the ICJAO and NDCs
News
WYCJ Publishes a Briefing Note on the ICJAO and NDCs
News
News
Reflections on the Palm Tree
News
Reflections on the Palm Tree
News
News
Youth-Led National Climate Justice Solidarity Event Celebrates ICJ Advisory Opinion on Climate Change and Human Rights
Event
Youth-Led National Climate Justice Solidarity Event Celebrates ICJ Advisory Opinion on Climate Change and Human Rights
Event
Event
Rewatch the Mobilization Session: ICJAO - People’s Case for Climate Justice
Event
Rewatch the Mobilization Session: ICJAO - People’s Case for Climate Justice
Event
Event
Start A Watch Party: Follow the ICJAO Delivery Live
News
Start A Watch Party: Follow the ICJAO Delivery Live
News
News
WYCJ at UNOC3
Event
WYCJ at UNOC3
Event
Event
Bangladesh’s Dialogue on the ICJ Advisory Opinion: Strengthening National Climate Responsibility
Bangladesh’s Dialogue on the ICJ Advisory Opinion: Strengthening National Climate Responsibility
UNOC Virtual Side: “Intergenerational Equity in Ocean Governance: Securing the Rights of Future Generations” Event Blog
Event
UNOC Virtual Side: “Intergenerational Equity in Ocean Governance: Securing the Rights of Future Generations” Event Blog
Event
Event
What’s Next for Climate Justice in Bhutan?
Event
What’s Next for Climate Justice in Bhutan?
Event
Event
Bangladesh's National Debrief on the ICJ Advisory Opinion
Event
Bangladesh's National Debrief on the ICJ Advisory Opinion
Event
Event
WYCJ at ChangeNOW 2025
Event
WYCJ at ChangeNOW 2025
Event
Event
World’s Youth for Climate Justice Backs Historic African Advisory Opinion Request on Climate Justice
News
World’s Youth for Climate Justice Backs Historic African Advisory Opinion Request on Climate Justice
News
News
Why Climate Action Must Start With Our Youngest: My Experience at the ECD and Climate Change Workshop
Event
Why Climate Action Must Start With Our Youngest: My Experience at the ECD and Climate Change Workshop
Event
Event
Collective Reflections from LCOY Nepal 2024 of WYCJ Members 
Event
Collective Reflections from LCOY Nepal 2024 of WYCJ Members 
Event
Event
From the Streets to a Court of Our Own
Event
From the Streets to a Court of Our Own
Event
Event
Marking a Historic Moment - Opening Ceremony for the ICJAO oral hearings
Event
Marking a Historic Moment - Opening Ceremony for the ICJAO oral hearings
Event
Event
Traditional Hui: Indigenous Laws and Traditional Knowledge – Pathways to Climate Justice
Event
Traditional Hui: Indigenous Laws and Traditional Knowledge – Pathways to Climate Justice
Event
Event
ICJAO Watch Parties: WYCJ Asia Front
Event
ICJAO Watch Parties: WYCJ Asia Front
Event
Event
Year in Review: Caribbean Front
News
Year in Review: Caribbean Front
News
News
WYCJ Frente América Latina impulsa la participación juvenil desde Bacalar, México
Event
WYCJ Frente América Latina impulsa la participación juvenil desde Bacalar, México
Event
Event
AO Alliance Press release: Global South Shows the Way As Historic Climate Justice Hearings Close at World’s Highest Court
News
AO Alliance Press release: Global South Shows the Way As Historic Climate Justice Hearings Close at World’s Highest Court
News
News
COP29: A Climate of Injustice – Debt, Exclusion, and the Fight for True Accountability
Event
COP29: A Climate of Injustice – Debt, Exclusion, and the Fight for True Accountability
Event
Event

Our Team

Follow us on social media!

On 23 July 2025, the International Court of Justice delivered a historic ruling, setting out states’ obligations on climate change under international law and the legal consequences of inaction. It was the result of a Pacific-inspired global ca
This week on Wednesday, we will be in The Hague for The Relevance of ICJ Advisory Opinions: Nuclear Weapons, Climate Change and Other Global Issues. The event marks 80 years of the International Court of Justice and 30 years of its landmark opinion o
During SB64, we teamed up with Youth Negotiators Academy for a workshop on using the ICJ advisory opinion on climate change (ICJAO) to elevate climate-justice narratives inside UNFCCC spaces. We held a crash course on the legal obligations clarified
Two weeks of UN climate negotiations in Bonn have come to an end and our team was on the ground! We had meaningful conversations about the ICJAO and the steps towards COP31 in Antalya. 🌍 For the past two weeks, government delegations, UN bodies, sc
Tomorrow, an important conversation is happening in Bonn 💫 Join us to our side-event: Strengthening Climate Ambition and Implementation: Due Diligence, Cooperation and Human Rights after the ICJ Advisory Opinion and UNGA Resolution on Climate Chang
Join us on 17 June at SB64! 🌟 We’re hosting side event with @humanrightswatch @uusc @cenepal and @climates.france on strengthening climate ambition and implementation of the ICJAO As countries prepare their next round of NDCs, this session
SB64, the annual UN June Climate Meetings in Bonn, Germany, has officially started! 🌟 This is the first major UN negotiating session since COP30 and the adoption of the UNGA resolution to operationalize the ICJ’s climate ruling. Over the nex
📣 Contribute to the upcoming Implementation Toolkit for Climate Advisory Opinions: ICJ, IACtHR, ITLOS & AfCHPR! In celebration of World Environment Day, World's Youth for Climate Justice (WYCJ), together with its global and regional partners, i
Join our Global Membership Onboarding Session and become part of WYCJ! 🙌 This Friday, on 5 June, World’s Youth for Climate Justice (WYCJ) organises two Global Membership Onboarding Sessions to welcome new stubborn optimists to the organisatio