Today is World ozone day (16th of september) Also known as the International Day for the Preservation of the Ozone Layer, this UN observnace day raises awareness of the importance of protecting the ozone layer, and avoiding the use of chemicals that are harmful to it. For three decades, countries have worked to protect and heal the ozone layer, which is now recovering. But what is the ozone layer, and why is it important? Find out by watching this film:
