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40 years of the Vienna Convention: Documentary

This landmark convention to protect the ozone layer was adopted in 1985.

Tribute to Cornelius Rhein (1967 - 2025)

It is with profound sadness that we share the news of the unexpected passing of our dear colleague and friend, Cornel

The Girl I Am, The Change I Lead: Girls on the Frontlines of Crisis

2025 marks thirty years since the Beijing Declaration and Platform for Action — the world’s most progressive blueprin

WMO Ozone and UV Bulletin

The year 2025 marks the 40th anniversary of the adoption of the Vienna Convention for the Protection of the Ozone Lay

Refrigeration - cool technology heating up the planet

It could be argued that refrigeration is perhaps one of our best inventions.

In memory of Professor Xiaoyan Tang (1932-2025)

The Ozone Secretariat is deeply saddened to hear of the passing of Professor Xiaoyan Tang on 11 June 2025.

Montreal Protocol delegates discuss and adopt decisions to address ozone layer protection and other environmental challenges

BANGKOK, 5 NOVEMBER 2024 - Parties to the Vienna Convention and the Montreal Protocol and other stak

Montreal Protocol delegates replenish the Multilateral Fund and address emerging challenges

NAIROBI, 30 OCTOBER 2023 - Parties and other stakeholders convened for the Thirty-Fifth Meeting of t

Parties to the Montreal Protocol meet in Bangkok to prepare for key decisions to be taken in Nairobi

The forty-fifth meeting of the Open-ended Working Group (OEWG45) of the Parties to the Montreal Protocol on Substance

Montreal Protocol delegates meet again in person for the Thirty-Fourth Meeting of the Parties

MONTREAL 7 NOVEMBER 2022 - Parties and other stakeholders convened for the Thirty-Fourth Meeting of

Thirty-five years of successful ozone layer and climate protection

Montreal Protocol: Global cooperation protecting life on earth

Parties to the Vienna Convention and the Montreal Protocol meet and adopt 18 key decisions

Nairobi, 1 November 2021 – From 23 to 29 October 2021, parties and other stakeholders convened onlin

Parties to the Montreal Protocol continue online discussions on unexpected emissions of CFC-11 and energy efficiency

Nairobi, 20 July 2021 – From 14-17 July 2021, parties and other stakeholders to the Montreal Protoco

Parties to the Montreal Protocol make key decisions

What: Combined twelfth meeting of the Conference of the Parties (part I) and Thirty-Second Meeting o

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Kigali Amendment Kigali Amendment
Montreal protocol progress
Kigali Amendment

The Kigali Amendment to the Montreal Protocol entered into force on 1 January 2019 after the threshold for the agreement to enter into force was met on 17 November 2017, when it was ratified by 20 parties.

Working towards climate neutrality Working towards climate neutrality
Greening the blue
Working towards climate neutrality

The Ozone Secretariat is part of the UN’s “Greening the Blue” efforts to move towards climate neutrality. The Secretariat works towards climate neutrality by measuring the carbon footprint of Vienna Convention and Montreal Protocol meetings ...