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New research on natural ozone cycles suggests ozone levels in the lowest part of Earth's atmosphere probably won't be affected much by projected future strengthening of the circulating winds that transport ozone between Earth's two lowest atmospheric layers. The finding is good news, since human and plant health are harmed by exposure to ozone near the ground. Significant increases in ozone in the troposphere, would also lead to additional climate warming because ozone is a greenhouse gas. [Source: NASA]
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