The environmental crises of the past often seem to disappear—have problems like acid rain and smog been solved?

The ozone layer has been on track to recover thanks to the Montreal Protocol—but a loophole may be holding it back. Chemicals ...

With the help of spy planes and B-57 bombers, Jim Anderson discovered the link between climate change and ozone loss. Ethan Hill “Bull!” said Kerry Emanuel, an atmospheric scientist at MIT. Jim ...

Perhaps the best example of successfully managing a climate change “near-miss” is the 1989 Montreal Protocol that banned chlorofluorocarbons—which demonstrates the power of science and international ...

Sometimes, global problems seem to simply disappear, leading people to believe that the problem might not have been as significant as initially reported. However, the reality might be that somebody ...

The world would be on track for a collapse of the ozone layer and an additional 2.5 degrees Celsius of global warming by the end of the century if it hadn't agreed in the 1980s to ban CFCs, chemicals ...

DENVER — Smoke from the Canadian wildfires is once again hazing up the Front Range. Not only is it unpleasant to breathe, new research shows that smoke can erode the protective ozone layer. Take for ...

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While ozone pollution is typically a summer phenomenon in Maricopa County, ozone season stretched well into the fall this year. High ozone levels usually drop off in mid-September, but Maricopa County ...

DENVER — A scientist who helped lead a United Nations report on the Earth's protective ozone layer said on Tuesday that "we have solved this problem. On the other hand vigilance is required." David W.