The ozone hole has stabilized—some questions remain

The production and consumption of chemical substances threatening the ozone layer has been regulated since 1987 in the Montreal Protocol. Eight international expert reports have since been published, which examine the current ...

Hope for deal to scrap super greenhouse gases

Hopes were high Friday that world envoys meeting in Rwanda will agree to phase out potent gases used in refrigerators and air conditioners that are one of the biggest contributors to global warming.

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