Dataharvest 2025 - the European Investigative Journalism Conference

Satellite imagery is a powerful tool for data-driven investigations, but getting started can be tricky. In this session, you'll learn how to navigate the U.S. Geological Survey's portal to access free satellite imagery from around the world - as well as common limitations when working with the data format. Then, using the *terra* package in R, you'll be guided through loading and analysing this data to identify urban heat islands. You will leave with practical skills, fresh inspiration and the confidence to tackle your own spatial analysis projects.

Participants should have a working knowledge of R. To get the most out of the session, please come with R & RStudio (or another coding platform of your choice) already installed on your computer and a (free) account on the USGS Earth Explorer portal

Aleph is an open-source investigative tool, originally developed by a team at the OCCRP, but now developed by a wider open source community. In the last month, Alex and Simon (investigativedata.io) have developed new features for search and cross-matching within the open source software. It allows users to upload large quantities of documents and makes them fully searchable in several languages. In this hands-on session, we will show attendees ways of using the search feature as power users.

Data is the beating heart of many cross-border investigations. But how do you build a data team capable of delivering groundbreaking work?
In this panel, we will discuss how to manage complex, multinational collaborations, juggle deadlines, and push back on unreasonable demands. We'll also explore best practices for leading data-driven investigations across multiple jurisdictions while navigating technical and editorial challenges.
This panel will also explore the relationship between a data editor and their team, as well as their role in embedding data journalism in newsrooms of different sizes.
This session is geared toward data journalists, editors (of all stripes), newsroom decision-makers, and cross-border organisations seeking to explore new investigative data stories or strengthen their existing offerings.