Esra Tat is the Executive Director of Zero Waste Europe. She leads the organisation’s strategic development, supports its member organisations, and represents it at both European and global levels to promote zero waste models worldwide.

Martin A. Noorkõiv is a partner at Strateon Social Impact Consulting and a seasoned social change consultant. With +15 years of experience in civil society, academic leadership and strategic governance.

Nathan Dufour is a Reuse Systems Manager at Zero Waste Europe (ZWE). European coordinator of the ReuSe Vanguard Project (RSVP) since 2021, Nathan has been leading ZWE's pioneering work to create the conditions for mainstreaming the adoption and harmonisation of packaging systems for reuse across Europe, with a special focus on cities.

Triin Vihalemm is Professor of Communication Research at the University of Tartu. Her work includes strategic communication, designing social change programmes and researching social change processes. A significant part of her over hundred scientific articles and book chapters deal with transition processes in society.

Anastasiia Martynenko is a Circular Economy Research and Training Coordinator at NGO Health Care Without Harm Europe. She is leading on organization's educational activities, supporting the implementation of practical projects to reduce waste and toxicity in healthcare, as well as strengthening organizations' collaboration with the academic partners.

As Deputy Mayor of Tallinn, Margot is responsible for Entrepreneurship, Innovation, the Circular Economy, and Tourism in Estonia’s capital city. Estonia is the world leader in unicorns per capita, and Tallinn is building up its system to become the innovation testing centre of Europe.

John Waldron is Policy and Public Affairs Manager at Action on Smoking and Health (ASH) in the UK. With over seven years’ experience in tobacco control, John leads ASH’s policy work with local government and the National Health Service and plays a central role in its national campaigning activity.

Mayri Tiido is an expert trainer with over a decade of experience, specialising in the circular economy and pitching. She has delivered trainings, consulting, and mentoring for businesses, lectured at the Estonian Academy of Arts, and co-founded Materjalivoog, a B2B marketplace for sustainable use of excess manufacturing materials.

Margit Keller, PhD, an Associate Professor of Social Communication at the University of Tartu has been teaching students and researching possibilities of reshaping people’s everday habits to catalyze social change for over 25 years. Currently she is coordinating a team of University of Tartu and Taltech researchers to look into the beauty and pain of Just Transition of Ida-Virumaa (North-East Estonia, where the oil shale mining and energy production of Estonia is located).

Kädi Ristkok is the CEO of the Estonian Cleantech Association and previously headed the Climate Policy Department of the Ministry of the Environment. She has extensive experience in systemic change and climate policy implementation. Her strength is the ability to link ideas generated in workshops with national and European strategic goals.

Carolin Aas is a sustainability specialist and works in the finance department of the Estonian Cleantech Association. Her focus is on linking environmental goals and business logic, which is necessary for the successful implementation of industrial symbiosis and the circular economy.

Kädi Eelmaa is the Head of the Circularity Department at Tallinn Circular Economy Centre, fostering repair culture, enhancing the city’s reuse capacity, and developing practical circularity hubs across the city. She co-leads the transformation of former waste centres into upgraded circularity centres and the creation of new ones, driving systemic change that makes circular living approachable and engaging for communities.