As the climate crisis deepens, the need for ambitious and fair global action has never been more urgent. One proposal gaining attention is a global carbon tax — a system that would put a price on carbon emissions worldwide, aiming both to cut greenhouse gases and to fund climate solutions. But could such a policy work in practice, and what would it take to implement it on a global scale? On Wednesday 17 September 2025, Global Visions hosted a multidisciplinary panel at Musiikkitalo Terassilämpiö, Helsinki, to discuss the feasibility, challenges, and future visions of a global carbon tax. The conversation explored how it differs from other carbon pricing mechanisms, the governance structures and international cooperation it would require, and whether it could also serve as a tool for climate justice by supporting adaptation in Global South countries. Guests:Professor Janne Hukkinen is a Professor of Environmental Policy at the University of Helsinki, specializing in the socio-cognitive aspects of sustainability and environmental risk governance. He is the author of several books, with his latest being Sustainability Networks: Cognitive Tools for Expert Collaboration in Social-Ecological Systems. He serves on the editorial boards of Ecological Economics, the International Journal of Learning and Change, and Global Challenges. His awards include the Finnish State Award for Public Information and the Science Book of the Year Award. Professor Heikki Patomäki is a Professor of World Politics and Global Political Economy at the University of Helsinki. His research interests include philosophy, methodology of social sciences, economic theory, global political economy, big history, futures studies, and global justice and democracy. His latest books are World Statehood: The Future of World Politics (Springer 2023) and Globalizations: The Shape of Things to Come (Routledge 2025). Juha Turkki is Development Director for Systemic Climate Solutions at the Climate Leadership Coalition (CLC), Europe’s largest non-profit climate business network. He has over 20 years of experience in climate policy, working to develop market mechanisms and governance models that enable cost-efficient investments in climate solutions and carbon removals. At CLC, Turkki focuses on advancing carbon removal strategies, international climate cooperation, and policies that accelerate the transition to climate neutrality. Dr. Ville Seppälä has a PhD in economics. He recently produced a global carbon price and dividend simulator with support from the Kone Foundation, enabling users to explore and compare climate–carbon scenarios and income effects in real time www.globalcarbonprice.com. He currently works at the National Audit Office of Finland auditing the knowledge base of climate policy, and previously created visual climate analytics for the European Parliamentary Research Service.Global Visions is a non-profit association based in Helsinki, Finland with the purpose of bringing people and organisations together and developing ideas aimed at building a better world.Follow and learn more:Instagram: @globalvisionsry Bluesky: globalvisions.bsky.social TikTok: @globalvisionsry LinkedIn: Global Visions See our panels on YouTube: GlobalVisionsry More information: www.globalvisions.fi/enOur music is licensed from Premium Beat.

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