This document discusses data journalism and open data. It explains that data journalism involves collaboration between journalists, coders, and graphic designers. Journalists interview data sources, coders write programs and perform analysis, and graphic designers create visualizations. The document provides examples of data journalism projects from Helsingin Sanomat, including traffic maps, voting advice applications, and a tax calculator. It also defines open data and notes that data visualization is a type of unique content that cannot be copied by other publications.