The ozone hole was real. The danger was global. World leaders acted together, and the ozone layer is healing. This World Ozone Day, we celebrate what science and cooperation can achieve. 🌍 #WorldOzoneDay #GlobalAction @unep.org @bas.ac.uk

40 years ago the world agreed the Vienna Convention for the Protection of the Ozone Layer. The Montreal Protocol followed. From science to global action, this is multilateralism at its best. On #WorldOzoneDay we celebrate how this work has protected our environment & health @unepozone.bsky.social

Nigeria is hosting an event to commemorate #WorldOzoneDay recognising officials who have contributed to ozone layer protection in Nigeria. 📅 Sep 16, 2025 ⏰ 09:00 AM West Central Africa Join Zoom Meeting bit.ly/4noraPP #MontrealProtocol #Science #GlobalAction

In 1985, the Vienna Convention set the stage for fixing the ozone hole. It showed the power of countries coming together around science. A model we still need today. #WorldOzoneDay #MontrealProtocol #GlobalAction

Costa Rica 🇨🇷 celebrating hashtag#WorldOzoneDay with an event at Colegio Técnico Profesional de Cañas taking place on 25 September 2025. See flyer for more details. #MontrealProtocol #Science #GlobalAction

📢 Grenada 🇬🇩 is hosting a series of activities throughout the week of September 15–19 to mark #WorldOzoneDay - see poster for more details and contact information.

Many congratulations and thank you to the Kingdom of Saudi Arabia 🇸🇦 for becoming the 166th and latest party to ratify the Kigali Amendment. Phasing down climate warming HFCs combined with improving energy efficiencies in the cooling sector can avoid significant further warming 🌿 #MontrealProtocol

On this #WorldOzoneDay we also celebrate the science that in the 1970s warned of a looming environmental crisis and the ozone treaties that continue to protect the ozone layer & environment to this day 🌿 Science it not cheap, but its value is beyond measure #MontrealProtocol #Science #GlobalAction

Big discoveries begin with small measurements. In Antarctica, scientists measured the ozone hole, and changed the world. @bas.ac.uk #MontrealProtocol #OzoneLayer

On #WorldOzoneDay we celebrate the achievements of the Montreal Protocol. Thanks to the parties that implement it, the ozone layer is being protected and will eventually heal. For more ozone treaties successes bit.ly/4m5rrFx #MontrealProtocol #Science #GlobalAction

In an increasingly hot world, every fraction of avoided warming is a huge win and one we are proud to celebrate on #WorldOzoneDay. By phasing out nearly all ODSs, the #MontrealProtocol has helped avoid global warming of approximately 0.5-1 °C by mid-century 🌿 bit.ly/4paCiRq #Science #GlobalAction

📅 Webinar TOMORROW 9 September 📢 Free trade zones are designed to enhance efficiency of trade. The webinar will focus on improved customs and inter-agency cooperation to monitor the trade in commodities such as wildlife, chemicals & waste. To register bit.ly/4lYbh0B #GreenCustoms #illegaltrade

This #WorldOzoneDay we also celebrate the 40th anniversary of the Vienna Convention adopted in 1985. The Convention was on a mission: to mobilise global action to collate data & information to save the ozone layer 🌿 Find out how it was done bit.ly/46j3h5T 🎉 #MontrealProtocol #Science #GlobalAction

As #WorldOzoneDay approaches, we will also celebrate the adoption of the Vienna Convention in 1985. Together, the ozone treaties continue to protect life on Earth. True global action heroes - then and now 🌿 For more 👀 ozone.unep.org #MontrealProtocol #Science #GlobalAction

You can't protect what you don't measure. @bas.ac.uk's Jonathan Shanklin explains why long-term monitoring still matters for the ozone layer and for the planet. #MontrealProtocol #OzoneLayer

📅 Webinar 9 Sep on free trade zones (FTZ) and trans-shipment operations bit.ly/4n2V6QA focusing on the need for robust monitoring, improved customs procedures and inter-agency cooperation to ensure compliance with MEAs and related laws. For more info bit.ly/4lYbh0B #GreenCustoms #MontrealProtocol

Many congratulations and thanks to St Kitts & Nevis 🇰🇳 for becoming the 165th party to ratify the Kigali Amendment. Phasing down HFCs combined with improving energy efficiencies in the cooling sector can avoid significant warming bit.ly/465aJQT 🌿 🌎 #MontrealProtocol #KigaliAmendment #ClimateAction

Science is expensive. But what it gives back to society is priceless. Without long-term funding, there would be no monitoring, no discovery of the ozone hole and no safer future. #MontrealProtocol #OzoneLayer

📢 Every year on 16 September, we celebrate the achievements of the #MontrealProtocol on #WorldOzoneDay. This year, we are highlighting the importance science. This year’s series of posters available in all 6 UN official languages on our WOD2025 dedicated webpage ozone.unep.org/ozon.../from...

Today is #InternationalYouthDay A perfect moment to celebrate the youth shaping our planet’s future. Jonathan Shanklin’s discovery of the ozone hole sparked global action. His message now? Be curious. Be courageous. Keep discovering. #MontrealProtocol #OzoneLayer

Nepal 🇳🇵 becomes the 164th country to ratify the hashtag#KigaliAmendment. In doing so, it commits to phasing down climate warming HFCs and adopting sustainable cooling technology. Countdown to full ratification: 34 parties remaining ozone.unep.org/all-ratifica... #MontrealProtocol #Nepal @unep.org

Parties to the #MontrealProtocol met in Bangkok from 7-11 July at the #OEWG47 to discuss continued and increased ozone layer protection. Many agenda items resulted in draft decisions for #MOP37 3-7 November in 🇰🇪 bit.ly/4nVpz4n #OzoneLayer #ViennaConvention Photo by IISD/ENB | Anastasia Rodopoulou

Still measuring. Still protecting. At Halley Station in Antarctica, scientists like Sabina Kucieba are monitoring our atmosphere year-round: vital work to protect the ozone layer 🌍 #MontrealProtocol #OzoneLayer #ViennaConvention

That's officially a warp! After 5 days and countless hours of discussions, negotiations, divergence and meeting again in the middle, #OEWG47 came to a close earlier this afternoon. Safari njema delegates & see you in Nairobi 🇰🇪 for #MOP37. Photo credit: IISD/ENB | Anastasia Rodopoulou

Parties to the #MontrealProtocol attending the #OEWG47 resumed plenary discussions during day 3 before moving to contact groups to discuss various issues in more detail, preparing potential decisions for adoption at #MOP37 later in the year. Photo credit: IISD/ENB | Anastasia Rodopoulou

Happy Bangkok Days! Always a pleasure to convene the meetings of the @unepozone.bsky.social at ESCAP in Bangkok 🇹🇭 #MontrealProtocol #KigaliAmendment #OEWG47

On Day 2 at the #OEWG47 parties to the #MontrealProtocol reconvened at @unescap.bsky.social to review life-cycle refrigerant management and metered-dose inhalers that use HFCs as a propellant, as well as TEP changes, Halon 1301 used in commercial aircraft and PFAS, or #foreverchemicals

The Technology and Economic Assessment Panel (TEAP) of the #MontrealProtocol along with its Technical Options Committees (TOCs) fielding questions from parties after presenting its 2025 progress report on Day 1 at #OEWG47 in Bangkok 🇹🇭 Photo credit: IISD/ENB | Anastasia Rodopoulou

#OEWG47 is underway in Bangkok. In her address, Meg Seki, Executive Secretary of the @unepozone.bsky.social welcomed parties to the #MontrealProtocol. On the 40th anniversary of the Vienna Convention, she commended the success of the ozone treaties. Photo credit: IISD/ENB | Anastasia Rodopoulou

📣 26 side events will take place during #OEWG47 from 7-11 July in Bangkok. Hosted by various organisers, events range from life-cycle refrigerant management, "forever chemicals", challenges of women in cooling, delivering on energy efficient and sustainable cooling and many more!! bit.ly/4eAZmUv

Parties to the #MontrealProtocol will meet in Bangkok from 7-11 July 2025 for the 47th Open-ended Working Group to discuss issues affecting the #ozone layer and ensure its continued protection #OEWG47 #MOP37 For more information and access to meeting coverage ozone.unep.org

Women in Cooling – Breaking barriers with #coolskills! On this #WorldRefrigerationDay, we shine a light on women changing the face of the sector. Let’s celebrate those breaking barriers, pushing for progress. More info from #OzonAction implementing partners of the #MontrealProtocol bit.ly/3ZSI677

On #WorldRefrigerationDay, the #KigaliAmendment is a key driver towards #sustainablecooling. Full ratification would increase the demand for more technicians & engineers with #coolskills – a milestone worth aiming for ahead of its 10th anniversary in 2026! bit.ly/3I1dpXf #WREFD25 #MontrealProtocol

The ozone crisis began at the poles but threatened the planet. Science led. Policy followed. And it worked. The ozone layer is healing. From ozone to climate, we already have the blueprint for global action. Let’s use it. #OzoneLayer #ViennaConvention

Ozone protection efforts have contributed significantly to slowing climate change by avoiding an estimated 135 billion tonnes of carbon dioxide (CO2) equivalent emissions from 1990 to 2010. Explore more facts from @unepozone.bsky.social on ozone protection here: ozone.unep.org/facts-and-fi...

The summer solstice ☀️ is the longest day of the year - the day with the most hours of daylight and sunshine making it a potentially very hot day. We need to adopt more #sustainablecooling as a priority. For some, hot days occur all year round bit.ly/4kU28qk 🌿 #MontrealProtocol #KigaliAmendment

📢 The International Network of Women in Cooling (INWIC) has launched a mentorship programme to connect women professionals in the #cooling sector across the world to encourage knowledge exchange and career development in the industry. Find out how you can become a mentee or mentor: bit.ly/4jQdr1l

It's #FreshVeggiesDay today 🥕🍆🍅🥦 But did you know that the #ozone layer helps shield vegetables from over exposure to harmful UV radiation so that they stay healthy and nutritious? It also protects vital insects like bees 🐝 that pollinate the veggie plants! Hurray for the #MontrealProtocol 🎉

The Ozone Secretariat is deeply saddened to hear of the passing of Professor Xiaoyan Tang on 11 June 2025. She was a long serving co-chair of the Environmental Effects Assessment Panel (EEAP) from 1993 until 2012 and made tremendous contributions to the protection of the ozone layer bit.ly/4dYDSk2

The international space industry is growing, but new research in Nature shows that a rapid increase in rocket launches could harm the ozone layer. theconversation.com/a-10-fold-in...

Why trust science? Because we've seen what happens when we do. The ozone story shows how global action, based on scientific evidence, worked. We listened. We acted. The ozone is healing. On #WorldEnvironmentDay, let’s do it again! #ViennaConvention #OzoneLayer @unep.org

As the ozone layer slowly heals, it's not only ozone-depleting substances that could undermine recovery...... #MontrealProtocol #OzoneLayer www.thenationalnews.com/news/2025/05...

Free trade zones (FTZs) are strategically located to serve as hubs for commerce and transshipment activities. There are an estimated 7,000 FTZs worldwide and growing. FTZs offer a range of benefits to businesses. Find out more bit.ly/3T2Q0XH 🛳️ 🚛 📦 🚔 @minamataconvention.bsky.social #OzonAction

How to protect the ozone layer and fight #ClimateChange? This new ‘Products and Tools’ catalogue by @unepozone.bsky.social provides resources to help stakeholders in governments and industries implement the Montreal Protocol effectively. Explore: www.unep.org/ozonaction/r...

#NationalSunscreenDay is a good reminder that while the ozone layer filters out almost all the sun's harmful UV radiation, it's still important to use sunscreen when in the sun to avoid burning 🌞🧴 🕶 🏖 To find out more: bit.ly/3JLWMx3 #MontrealProtocol #SunscreenDay

US industry surprised by higher than expected demand for R454B - a refrigerant with a lower global-warming potential 🌿 www.coolingpost.com/world-news/u...

What happens when science meets action? In 1985, Jon Shanklin helped uncover the Antarctic ozone hole. That led to the Vienna Convention, a global step forward. Today, on #BiodiversityDay, we remember that even the invisible - like the #ozonelayer - can shape life on Earth. #ViennaConvention

It's #WorldBeeDay 🐝 today! Nothing is too great or small for the #ozonelayer to protect. And thanks to the Vienna Convention and the #MontrealProtocol, we have global mechanisms in place that help safeguard this vital sunshield 🎉

40 years ago, we faced a stark choice: ignore controversial information about ozone depletion & hope the predicted environmental disaster doesn't unfold, or take action. Then came the 'smoking gun'. What followed was a masterclass in international science-diplomacy. #MontrealProtocol bit.ly/4jeqbPb

40 years ago, the Vienna Convention for the Protection of the Ozone Layer adopted in 1985 laid the groundwork for global efforts to save and protect the ozone layer vital for all life on Earth to thrive 🌿 🦜🐠🐞🌾🌽🌏 #MontrealProtocol #ozonelayer www.history.com/articles/ozo...