SpaceSilicon Canalsabout 3 hours ago
Montreal Protocol Shrinks Ozone Hole Toward 1980 Levels
8 min read
The Montreal Protocol phased out nearly 99 percent of banned ozone-depleting substances. The 2025 Antarctic season produced the fifth-smallest average ozone hole since 1992. Ozone over Antarctica is projected to return to 1980 levels around 2066 under current policies.
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