Ozone Layer En Route to Recovery

Here's some good news about the Ozone layer I came across on the 'Down to Earth' blog by Dan Kulpinski.

World Celebrates 20th Anniversary of Ozone Treaty -- It's an environmental and public health victory in the making:  The stratosphere's ozone layer, which protects us from much of the sun's harmful ultraviolet radiation, is on the road to recovery after a global phase out of ozone-depleting chemicals.