Our Contributors

tim Tim Birkholz is a diploma engineer in Urban and Regional Planning, member of the urban culture network Urbanophil, and founding member of the Volksentscheid Fahrrad in Berlin. He has been advising, writing and researching the topic of cycling and modern mobility for many years.

Gudrun Eickelberg is a diploma business economist, but has worked as a freelance artist and author since 2010, after working for a long time in the finance and control department of a large German company. Since 2011, she sits on Schwachhausen District Council representing the Green Party, and has been the spokeswoman for the Social, Integration and Culture Committee since 2015. In this function, she has launched an action on accessibility in road transport on the basis of the UN Convention on Human Rights. She also sits on the Greens Bremen Nordost district board. In addition to her political activities, her work as chairman of the association “The Elephant!” Bremen is at the heart. There, she devotes herself to the study of the colonial history of Bremen and organizes events in and on the Anti-Colonial Monument.

 richard-portrait  Richard Grassick is a Scottish film-maker/photographer. For forty years he was based in the north east of England, where he co-founded the community newspaper Durham Street Press, the North East Photo Coop, Darlington Cycling Campaign (with Beatrix Wupperman), and Darlington Media Group. In 1983 he joined Newcastle-based Amber Films where he worked for 23 years. More recently he has worked on projects in Bremerhaven, Bremen, Rostock and France, and co-founded Moving Films in 2013.
Anne Kirkham has been a passionate cyclist since 1994, participating in the early days of Critical Mass and the bicycle activism in California and Washington State and working as a bike messenger, bicycle and environmental activist, as well as a brief stint as a cyclocross racer. In addition to being active in the globalisation movement, she has taught womens’ self-defence and is a henna artist (www.hennakunst.de) who loves cultural exchange and especially sharing music, food, and art with friends from around the world. Anne has her Master’s Degree in Political Science, focusing on theories of social and environmental justice, and is currently researching the societal aspects of transportation politics in Germany.

Wolfgang Köhler-Naumann enjoys living and loves learning. Educated as a physicist (University of Bremen, in the 1970’s), his professional experience entails responsibilities in environmental protection and occupational safety, as an engineering consultant for energy systems, as a project manager in Space Industry and as HR manager in an international concern. For many years he has been closely attached to such overarching topics as “Human scale of living together”, “Economy as a purpose –not as an end”, “Energy” and “Traffic” – as a learner and actively involving himself.


Katja Leyendecker is a Chartered Engineer in environmental engineering and has been living in the north east of England for 20 years. In 2010 together with her co-activist Claire Prospert, she founded the Newcastle Cycling Campaign an organisation committed to campaigning for the planning and building of cycleways. Katja is currently writing a doctoral thesis on “Democracy, politics and activism: Women’s voices for Cycleways in Bremen and Newcastle”.

Blog: http://katsdekker.wordpress.com   Twitter: https://twitter.com/katsdekker

 Denis Petri has his doctorate in Chemistry and also studied urban history and specialized in history of mobility. He organized the collection of signatures for the Citizens’ Cycling Initiative. As a member of the board of Changing Cities, he is fighting for livable cities and to take back public space that has been privatized by the automobile. He is currently employed as a research assistant in Berlin’s House of Representatives, working on city development and smart cities.

Angelika Schlansky studied urban and regional planning at the TU Berlin. She has been living in Bremen since 1983, initially working in a freelance planning office and a city planning office. As a freelance city planner, she has produced studies on pedestrian traffic and car sharing, in between she also worked for district marketing in Kattenturm.

On behalf of the city of Kiel, in 2012 and 2015 she developed footpath axis concepts for two areas of the city of Kiel in cooperation with the StadtVerkehr office in Hilden. Since 1985 she is member of the board of FUSS e.V. Fachverband Fußverkehr Deutschland. From 2011 to 2019 she was a member of the Advisory Council in the district of Östliche Vorstadt for the Greens.


Bernd W. Thomsen is a trained electrician and  retired pedagogue. He has worked in Gehrden and Hanover as an educator. During his professional career he initiated with a team the internet networking of the project “Eco Schools in Europe” by presenting this project idea at an environmental fair in Lüneburg and a meeting of the project countries in Manchester/UK. The European project has meanwhile become an international project in which Bremen is also involved.

As a member of the Schwachhausen Beirat he campaigned through a citizen’s application to restore barrier-free tram and bus stops. He founded the Initiative Autofreie Geh- und Radwege (Car-free footpaths and cycle paths initiative) and is a member of the Bremer Bündnis für die Verkehrswende (Bremen Alliance for a Transport Transition), where he aims to help establish wider resident parking and comprehensive car parking management in the city.



Beatrix Wupperman is an environmental activist. After training as a journalist at a regional daily newspaper, she studied in Berlin, gaining a doctorate in National Economics. In 1987/88 she was economic speaker for the Green Frauenfraktion in the Hamburg parliament, and then spent 20 years at the Bremen Chamber of Employees as a consultant for economic policy, urban development and the environment. Since 1995, she has been a member (and partly chair) of the executive committee of the BUND (Friends of the Earth) Bremen. Since 2008 she has worked as a filmmaker with Richard Grassick ( “Beauty and the Bike” (2009), “Hommage to Auto*Mat” (2011), “From Us To Me” (2016), “Cantem” (2016), “Pedelec to Paradise “ (in production).) She co-founded Moving Films in 2013.

Mehr zu Beatrix: : http://wupperman.de/html/beatrix_vita.html