Guest Blog Posts Policy Perspectives on Citizen Science and Crowdsourcing: A special issue of CS:TP Why do all talk data? And what do they talk about? – part 1 (in German) Why do all talk data? And what do they talk about? – part 2 (in German) Supporting Environmental Democracy and the Aarhus Convention JRC publications on Citizen Science Access to JRC publications repository Other documents and articles Citizen Science Association Data & Metadata Working Group: Report from CSA 2017 and Future Outlook Citizen Science: Innovation in Open Science, Society and Policy Data democracy – increased supply of geospatial information and expanded participatory processes in the production of data Increasing understanding of alien species through citizen science (Alien-CSI) Defining principles for mobile apps and platforms development in citizen science Citizen Science and Open Data: a model for Invasive Alien Species in Europe