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Discovering ozone, its incidence in the Earth´s atmosphere and the gas´s effects have been some of the most important findings in modern history. While ozone layer found in the upper atmosphere protects us from the harmful ultra-violet rays, its counterpart closer to ground level possesses serious health damaging and pollutant abilities. The international community has joined efforts to ensure that the ozone layer does not shrink, yet the problem is far from being solved, as new gases threaten these aspirations. Tropospheric ozone has emerged as one of the most serious problems, especially in urban areas where smog has become quite the common phenomenon in a hot summer day. Furthermore more allergens raise possible allergy threats. In order to find out more about ozone, its dual nature and the main terms associated with it read this book.

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