How many people realise the impact Elsie Widdowson had on the way we view nutrition?
She was a food scientist who devoted her life to improving the diets of adults and children in Britain and abroad.
Matthew Parris hears why Helen Sharman, the first Briton to go into space, thinks Widdowson deserves her nomination.
They are joined by Elsie's friend and biographer Margaret Ashwell, President for the Association for Nutrition.
You can download the podcast to hear an extended version of the broadcast programme
Producer: Maggie Ayre.
First broadcast on BBC Radio 4 in September 2017.