The following post is an example of an above average post given the brief content on the NASA web site.
NASA web site
From this NASA web site, I learned that the ozone layer is in the stratosphere which is the layer of the atmosphere that is right above the troposphere (where all our weather is). Ozone is a molecule of three oxygen atoms. Ozone blocks most (97-99%) of the ultraviolet (UV) rays that hit the earth from the sun. The thickness of the ozone layer is measured in Dobson units. Some things that impact the health of the ozone layer are volcano eruptions, winds in the stratosphere, greenhouse gases, the sunspot cycle and chlorine in the stratosphere (from CFC's).
Things that I would like to know about after reading this article:
1) What is a Dobson unit and why is it named Dobson?
2) What of those factors that impact the ozone layer causes the greatest damage?
3) What can we do today to help improve the ozone layer?
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