There are many solutions available for reducing air pollution in our cities. A variety of measures can be implemented, depending on the characteristics of each city. The following are just some of the possible lines of action:

• Designing cities for pedestrians and cyclists. Cities designed for people —with green areas and clearly delimited spaces— make urban journeys safer and easier as well as more agreeable and healthy.
• Reducing motorised traffic. Cities constructed primarily to facilitate cars generate pollution and promote unhealthy lifestyles.
• Making public transport the backbone. Improving the public transport system and promoting its use greatly reduces air pollution by decreasing private vehicle use and lowering emissions.

You can take a look at the comprehensive solutions proposed by the WHO and at the measures being implemented by cities like Madrid and Barcelona