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International Day of the Girl 11 October

Now more than ever, with a global pandemic and the Earth’s environment at breaking point, science is at the forefront

A tribute

Professor Mario Molina, our most esteemed champion of ozone layer protection has passed away.

First International Day of Awareness of Food Loss and Waste 29 September 2020

How the Kigali Amendment can help cut food loss, bringing even more sustainability benefits

Kigali Amendment hits milestone 100th ratification, boosting climate action

The Kigali Amendment to the Montreal Protocol, an international agreement to cut the use of climate-warming hydrofluo

Arctic ozone hole closes

New data suggests that the record ozone hole discovered over the Arctic in March is now closed.

In 2017, the ozone hole's annual maximum set a record -- the smallest it's been since 1988

This year, the ozone hole's annual maximum set a record -- the smallest it's been since 1988.

Montreal Protocol 30th anniversary

Made on the occasion of the 30th anniversary of the Montreal Protocol

UN Secretary General: 30th Anniversary of Montreal Protocol

Made on the occasion of the 30th anniversary of the Montreal Protocol

The Hole - A film on the Montreal Protocol, narrated by Sir David Attenborough

Sir David Attenborough narrates the extraordinary history of the Montreal Protocol to raise awareness of the 28th Mee

Precious Ozone - The Climate Connection

This film shows the Protocol’s contribution to the protection of the climate and the greenhouse gas potential of som

Montreal Protocol and the SDGs

How will the Montreal Protocol contribute to delivering on the 2030 Agenda for Sustainable Development?

Assessment reveals healing ozone, untapped potential for climate action

Update, 1 Februrary 2019 - The full report of the 2018 Quadrennial Assessment of Ozone Depletion has

Increased research and observation crucial to efforts to continue to protect the ozone layer and climate

Top ozone experts from around the world highlighted the need for increased research and observations to inform policy

Countries begin preparing for implementation of the Kigali Amendment
At their 39th meeting in Bangkok from 11 to 14 July, the Open-Ended Working Group of the Parties to the Montreal Protocol


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 ...

World Ozone Day

Ozone for life: 35 years of ozone layer protection

32 years and healing

Keep cool and carry on

30th anniversary of the Montreal Protocol: we are all ozone heroes

Ozone and climate: restored by a world united

Precious ozone: 30th anniversary of the Vienna Convention and international ozone day 2015

Earlier celebrations of international ozone day