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TOAR shows present-day global ozone distribution and trends relevant to health; public database

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Ozone levels across much of North America and Europe dropped significantly between 2000 and 2014. People living in parts of southern Europe, South Korea and southern Japan and China also experienced more than 15 days a year of ozone levels above 70 ppb. Source: University of Leicester. Click to enlarge.

Ozone 255
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NASA GISS Study Finds That Methane Has an Elevated Warming Effect Due to Interactions With Aerosols

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New research by a team at the NASA Goddard Institute for Space Studies (GISS) in New York suggests that gas-aerosol interactions can amplify the global warming impact of some greenhouse gases. And hydroxyls drive long chains of reactions involving other common gases, including ozone. Source: Shindell at al. Click to enlarge.