The theme of the ITU’s World Telecommunication and Information Society Day 2018 is ‘AI For Good’. To mark the day, Jeanine Vos, Head of the GSMA SDG Accelerator, is speaking at the AI for Good Global Summit in Geneva, Switzerland. Her guest blog for the ITU deep dives into the work of the GSMA Big Data for Social Good initiative, which recently published a case study on how Telefonica’s LUCA team leveraged mobile big data to combat air pollution in the city of Sao Paulo, Brazil.