When Dilip Mahalanabis died on October 16, few people noticed. I've found no obituaries in any UK or US newspaper (except the FT).
Yet he was the leading figure in the popularisation of a medical treatment that saved FIFTY MILLION LIVES.

Our indifference to humble inventions is astonishing. Silicon chips, electricity and the steam engine certainly changed the world - but we need to find space for the brick, the cellucotton menstrual pad - and oral rehydration therapy.

https://www.ft.com/content/3b38f61f-f924-4527-bec4-898a54ce98b2