This false-color image displays the largest Antarctic ozone "hole" ever recorded on September 24, 2006.
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UN Agrees to Protect Ozone Layer Geographic History Article
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6 - 12
Subjects
Social Studies, Science, Health
Appropriate For
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On March 22, 1985, countries that belonged to the United Nations agreed to pass the Vienna Convention for the Protection of the Ozone Layer.
atmosphere Encyclopedic Entry
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7 - 12 and up
Subjects
Geography, Science
Appropriate For
- Educators
- Families
- Students
Encyclopedic entry. We live at the bottom of an invisible ocean called the atmosphere, a layer of gases surrounding our planet. Nitrogen and oxygen account for 99 percent of the gases in dry air, with argon, carbon dioxide, helium, neon, and other gases making up minute portions.
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Image courtesy NASA
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