Citizen science. Collective knowledge empowers

In the last two years, BRAL, Cosmopolis and many citizens groups have learned to measure how polluted the air is that we breathe every day, and to problematize the question to defend all Bruxellois. In this multilingual handbook, we present the experiences of researchers and practitioners with citizen science, in the AirCasting Brussels project and in other non-environmental examples. We also engage in a collective reflection on the methodology of these projects, both from a perspective of civic education and of political mobilisation.

Through the curiosity and the exchange between academics, citizens, and public officials, we become aware of a techno-scientific barrier to a democratic governance of the city. We can cross this barrier if we believe in the intelligence of all actors and in their potential to act collectively to better govern the city.

We hope that this publication can inspire you – whether you’re an innovative social worker or a coordinator of a complex Living Lab. Cosmopolis and BRAL encourage you to collaborate to do research on urban complexities. Let your passion and curiosity be your guides in this endeavor. Because the city deserves it.

  • Do you want to read the publication? Find your copy in our office, Zaterdagplein 13, 1000 Brussels. Or order one through
  • If you are convinced of the work of BRAL, then become a member! You will receive this publication and all the others we will produce this year.
  • Are you interested in a workshop on citizen science to understand how it can help your organisation? BRAL would like to speak at your organization about the merit of citizen science! Contact us for a transversal workshop tailored to adults via
  • In June 2019 at a central location in Brussels, we will organise a general workshop on citizen science with Cosmopolis VUB. Keep an eye on the BRAL website,, for more information!


Liévin Chemin, Nicola Da Schio, Tim Cassiers

Urban movement BRAL and urban research center Cosmopolis - VUB

With the support of INNOVIRIS