Dirty air filing homes across the UK is leading to an increase in asthma and lower life expectancy. But just how filthy is it? And are we doing anything meaningful about it? Ros Taylor talks to David Green, senior research fellow in the aerosol science team at Imperial College London. 

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Written and presented by Ros Taylor. Lead Producer: Jacob Jarvis. Producers: Jacob Archbold, Jelena Sofronijevic and Alex Rees. Assistant Producer: Kasia Tomasiewicz. Audio production by Jade Bailey. Music: Kenny Dickinson. Group editor: Andrew Harrison. THE BUNKER is a Podmasters Production. 

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