DOMINICA, Nov 24 (IPS) - The world celebrates the International Day for the Preservation of the Ozone Layer once a year, but for Saint Lucia, the annual month-long observance highlights year-round work on ozone protection.For countries across the globe, September 16^th is a day to reflect on progress in protecting the ozone layer. The United Nations designated day for the preservation of the ozone layer is marked by speeches, and educational and social media campaigns.