Haaretz: Consumers who want to be sure they are not buying aerosols that damage the ozone layer no longer need worry. Yesterday, the annual International Day for the Preservation of the Ozone Layer, the United Nations announced that the ban on using materials harmful to the ozone layer is the first ecological treaty to be ratified by every country in the world. Advertisement The news came after the Pacific nation of Timor-Leste announced it had also ratified the treaty, known as the …