Small Changes is a podcast series of one-on-one interviews with people who've seen a problem in the world and set out to change it – often in small and unexpected ways
https://www.theguardian.com/global-development/series/global-development-podcast
'Children were dying of hunger': the doctor fighting for Ecuador's poor – podcast
Medic turned health activist Dr Erika Arteaga-Cruz has vowed to remedy the country’s poor record on treatment for communities in dire need