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
'The blood lady': the medical start-up founder saving lives in Nigeria
When Temie Giwa-Tubosun realised that Nigerians lacked safe access to vital health care products like blood she decided to do something about it. That decision changed her life and saved those of many others