In the clouds, a silver lining: The ozone layer is on track to fully heal

In the clouds, a silver lining: The ozone layer is on track to fully healConcern over the expanding hole in the protective layer launched the Montreal Protocol in 1987, with 197 countries signing on to phase out the production of industrial chemicals that can trigger the breakdown of ozone. Recommended: What’s made rates of degree attainment for immigrant students spike? “The rates of those processes are sufficiently slow,” says David Fahey, director of the Chemical Sciences Division at the National Oceanic and Atmospheric Administration’s Earth System Research Laboratory and a lead author on the study.



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