The OzonAction Special Issue is the mouthpiece of the Montreal Protocol, dedicated to stratospheric ozone protection and the implementation of the Montreal Protocol, providing the most recent information on ozone protection activities from industry, governments, NGOs, and international organisations. Special supplements are devoted to current topics of particular interest to Article 5 countries. The OzonAction Special Issue is the pre-eminent international news source dedicated to the protection of the ozone layer and implementation of the Montreal Protocol.