In 2001, he was one of the founders of Arnika. Since 1997, he has been involved in the activities of the Centre for the Support of Citizens, and since 2000 he has been leading it. It focuses on public participation in decision making and organizes campaigns for a better environment. He coordinates Arnika projects in the countries of the Western Balkans and the former Soviet Union.
Since 1993, he has been helping the environmental organization Děti Země as a volunteer; he was interested in the protection of the Earth's ozone layer and energy and protested against the construction of the Temelín nuclear power plant. He worked as editor-in-chief of the environmental and cultural periodical Alternativa (1994–2000). He was part of a group of squatters that founded the cultural and social Charitable Association of Medák in Střešovice, striving to save the village enclave by combining local traditions with alternative culture and the resurrection of neighbourly relations (1998–2003). In 2003, he completed a long-term internship in Azerbaijan as a consultant for public participation in decision making for the international CEE Bankwatch Network, dealing with the impact of oil extraction on the environment and the level of democracy. In 2005, he was one of the European coordinators of a global project to reduce environmental pollution with toxic substances, the International POPs Elimination Project. Since 2009, he has been involved in projects of the Arnika association in Armenia, Belarus, Bosnia and Herzegovina, Kazakhstan, Moldova and Ukraine, aimed at improving the environment and developing civil society.
He occasionally publishes and lectures, and participated in the script and production of Martin Mareček Zdroj's documentary film about the consequences of diesel consumption (2005), characterized by critics as an oil thriller with elements of tragicomedy.In the years 2006–2013, he participated in the management and work of the Auto*Mat initiative in Prague, which strives for a friendlier city to live in, focusing in particular on the issue of transport and support for urban cycling. Part of his work is captured in the film Auto*Mat.
In the years 2009-14, he was a member of the evaluation committee of projects registered in the Local Development Fund of the VIA Foundation and acted as a consultant for the Rapid Grants programme. In 2010-2011, he was a member of the board of the Association of Ecological Organizations Green Circle.
For almost two electoral terms (2007–2014), he was a representative of the Municipal District of Prague 6, where he served on the cultural committee and the committee for territorial development; later he headed the grant committee and worked on the control committee.
He is not, and has never been, a member of any political party. He lives in Prague.