Nature and EnvironmentAir pollution reaches new heightsTo play this audio please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoNature and EnvironmentJohn Laurenson03/09/2017March 9, 2017Each winter thousands of people flock to the ski resorts of the French Alps in search of the fresh mountain air. But the air in the mountains is now often worse than in large and badly-polluted cities like Paris and Lyon. https://p.dw.com/p/2YtZuAdvertisement