Going greenTo play this audio please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoAnne Demmer/Jessie Wingard06/04/2015June 4, 2015Since the 1990s, Mexico has been trying to improve its air quality. And a lot has changed in recent years. Bicycles are now part of the cityscape, the public transport system has been expanded, and the fight against smog has reached green heights.https://p.dw.com/p/1FblxAdvertisement