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Articles sur Ozone

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Temperatures are warming faster in the Arctic than anywhere else in the world. Water and sewer pipes in Iqaluit, Nunavut, are cracking during the winter as the ground shifts. THE CANADIAN PRESS/Sean Kilpatrick

The unexpected link between the ozone hole and Arctic warming

New research finds that chlorofluorocarbons (CFCs) and other ozone-depleting substances have boosted the effects of climate change in the Arctic.
Oil refineries and other industrial sources in and around Houston create some of the highest ozone levels in the nation. AP Photo/Pat Sullivan

As air pollution increases in some US cities, the Trump administration is weakening clean air regulations

Air quality in the US has improved greatly since 1990, but a new report finds progress stalling in some cities. Meanwhile, the Trump administration is rolling back air pollution controls.
In Paris’s André-Citroën Park, a balloon is used to measure air pollution. Bertrand Guay/AFP

The contest for the worst air pollutant

The number of substances emitted into the atmosphere is immense and growing, but some are particularly harmful to health and are subject to increased monitoring.

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