How have major cities like London and New York been affected by Covid-19 and how can we use historical data to explore how these effects might impact us in a post-Covid world? This was the question posed at a Microsoft Data + AI Hackathon held in partnership with the University of Oxford and Observable HQ at the New York City Reactor Meetup space this July. Attendees were encouraged to develop new insights based on the following criteria: Is data retrieved from an Azure data storage service? (Azure Cosmos DB, Azure Storage) Is data processed using an Azure data