CFC's

This NASA graphic shows relative average levels of atmospheric ozone over the northern hemisphere in 1984 and 1997. The lower concentrations, shown in darker colors, are due to the effects of ozone-destroying chemicals in the atmosphere.

The latest news on the ozone layer shows we can solve big environmental problems

Environment

After years of decline, the global ozone layer is starting to bounce back. That’s a big environmental success story — and an important example of what pro-environment actions can do in the long run, if countries take strong action together.

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