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Scientists find Earth's ozone hole is on the mend due to treaty efforts

A new scientific assessment shows damage to the ozone layer from aerosol sprays and coolants started recovering.

The ozone hole over Antarctica reaches its annual maximum
The ozone hole over Antarctica reaches its annual maximum (AN/NOAA)

GENEVA (AN) — A nearly three decade-old international treaty appears to be paying off: Earth's protective ozone layer has been slowly mending.

A new scientific assessment shows damage to the ozone layer from aerosol sprays and coolants started recovering in parts of the stratosphere at a rate of 1-3% per decade since 2000. The treaty known as the Montreal Protocol was adopted to protect the ozone layer by eliminating the use of ozone-depleting substances such as aerosol sprays and coolants.

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