Tony Barboza, reporting for LA Times:
“The hole in the ozone layer is stabilizing but will take until about 2070 to fully recover, according to new research by NASA scientists.
The assessment comes more than two decades after the Montreal Protocol, the international treaty that banned chlorofluorocarbons and other compounds that deplete the ozone layer, which shields the planet from harmful ultraviolet rays.”
So the Earth's thin protective layer is predicted to take about 100 years to return to pre-pollution levels. Our ability to screw up our only place to live is without limit. Luckily politicians acted when they did. Can you imagine if the ozone hole was detected this year? Today's politicians would deny that there was a problem and radicalized citizens would argue that it was a government plot to take away their way of life!
