Ozone

Ozone depletion began decades before discovery of ozone hole, MIT scientists have found. Using modern tools, they also determined that carbon tetrachloride, a common dry-cleaning and degreasing agent, was at the root of early ozone loss.

Source Back in February I posted The Kessler Syndrome , which also included a brief section mentioning the impacts of the proposed megacons...

Wildfires over the past decade have led to rises in surface ozone pollution across much of the continental United States, creating unhealthy air and contributing to hundreds more premature deaths annually, according to a new study published in the journal

Efforts to replace ozone-depleting CFCs have led to successive generations of refrigerants that may be contributing to the global buildup of toxic trifluoroacetic acid, raising new environmental and health concerns.

In much-needed good news for the environment, scientists have announced that the 2025 Antarctic ozone hole was relatively small and short-lived, confirming the long-term trend towards the recovery of Earth's protective shield against the sun.