Answers to questions about ozone depletion and the recovery of the ozone hole are now easy to find by researchers as well as the general public, through a new online index developed by the NOAA Earth System Research Laboratory in Boulder, Colo. The Ozone Depleting Gas Index uses simple graphs and charts to track progress in reducing the threat to Earth's ozone layer—the protective shield that prevents harmful ultraviolet radiation from reaching the surface...
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