Data Published By: OECD
Data publisher's source: “Progress of literacy in various countries: a preliminary statistical study of available census data since 1900”, UNESCO (Paris, 1953) (Table 152).
Basic reading and maths skills - World Development Report (2018)
Cereal production index - WDI (2017)
Air pollution sources in the UK - DEFRA
Literate world population (OurWorldInData based on OECD and UNESCO)