Previously with the Times Newspaper London, the U.N. Environment, and the U.N. Framework Convention on Climate Change, Nick was the Director of Communications and Spokesperson for the Paris Agreement of 2015. More recently, he has served as the Director of Communications for the Global Climate Action Summit that took place in San Francisco in September 2018.

Professor Sir David King is an Emeritus Professor of Chemistry at the University of Cambridge. He is also the Founder and Chair of the Climate Crisis Advisory Group (CCAG) and the Founder of the Centre for Climate Repair (CCR) at Cambridge University. Additionally, he is an Affiliate Partner of Systemiq. Previously, he served as the UK Government Chief Scientific Adviser from 2000-2007 and the Foreign Secretary's Special Representative on Climate Change from 2013-2017.

Ingmar is serial entrepreneur within financial communication and nominated for a DI Gasell Award, Ernst & Young Entrepreneur of The Year, Sweden’s Environmental Influencer 2018, and International Gamechanger of the Year 2020, and Green Warrior 2021. Ingmar Rentzhog has been the chairman of the environmental think tank Global Challenge. He is on the board of Naventus Corporate Finance. He’s a member of Al Gore’s Climate Reality and European Climate Policy Task Force and he was in 2022 appointed a European Climate Pact Ambassador by the European Commission.

Matthew leads Groundswell, a joint project by the Bezos Earth Fund, Global Optimism, and the Systems Change Lab. Groundswell supports a diverse and distributed chorus of voices to shape a narrative of courage and possibility, which essentially says: it’s not too late to achieve our Paris goals. For over ten years, Matthew has led strategic communications and campaigns to advance the climate action agenda. Prior to joining Global Optimism, Matthew was the Communications Director for the UN Climate Change High-Level Climate Champions, where he launched the Race to Zero, the Race to Resilience, the 2030 Breakthroughs and the Glasgow Financial Alliance for Net Zero. Elsewhere, his work has included positions at UN Climate Change, Mission 2020, and initially as an Advisor in Christiana Figueres’ original ‘groundswell unit’ in the run-up to the Paris Agreement.

Rev. Lennox Yearwood Jr. is the President & CEO of Hip Hop Caucus — a national nonprofit, nonpartisan organization celebrating 20 years of advancing civil and human rights through hip-hop culture. Rev. Lennox Yearwood Jr. is a Senior Advisor for Bloomberg Philanthropies and is one of today’s most innovative advocates for racial and climate justice. He was one of 50 changemakers selected for Forbes’ inaugural Sustainability Leaders list in 2024. He has been recognized as a White House Champion of Change for Climate Leadership and has been called a "New Green Hero" by Rolling Stone. Rev. Lennox Yearwood Jr. is a leader in climate storytelling and entertainment, executive producing the standup comedy special ‘Ain’t Your Mama’s Heat Wave’ and hosting the award-winning climate and environmental justice podcast The Coolest Show. Above all, he is a devoted father, bringing purpose and passion to both his family and his work.

Sangeeta Waldron is a multi-award-winning communications professional and published bestselling author specialising in climate change, sustainability, and corporate social responsibility. A Climate Reality Leader trained by Al Gore, Sangeeta brings unparalleled expertise to her work. She has written speeches for government ministers and worked with top-tier global brands and charities. She is a regular international speaker and moderator. She guest lectures and is the global contributing editor to the India CSR Network, one of India’s largest sustainability news platforms. Her latest and third book, What Will Your Legacy Be? Conversations With Global Game Changers About The Climate Crisis was published in January 2025. In 2021, she published her second book, Corporate Social Responsibility Is Not Public Relations, which was shortlisted for the UK Business Book Awards.

Annachiara is Head of ESG and Communication at Slättö, a Nordic private equity real estate investor with over EUR 3 bn assets under management. She leads integration of sustainability in the firm's investment strategy and operations. She is also Business Transformation Fellow at the Exponential Roadmap Initiative. Annachiara’s experience includes consulting, technology and consumer goods. She was EVP and growth lead for the global sustainability practice at the communications agency Prime Weber Shandwick, and Sustainability and Corporate Affairs Director Europe at Samsung Electronics, among other roles. She also served as Executive in Residence at the Stockholm School of Economics Executive Education.

Jo Hendy is Chief Executive of New Zealand’s Climate Change Commission, where she leads independent advice to help the country move toward a low-emissions, climate-resilient future that works for everyone. With over two decades of experience at the intersection of science, policy, and economics, Jo is known for her calm, clear thinking and ability to bring people together around complex issues. She’s committed to building trust across government, business, iwi, and communities — helping decision-makers navigate uncertainty and act with confidence as the climate changes.

Nick is the cofounder and the initial funder of Climate Science Breakthrough, a campaign to communicate climate science in a way that unlocks action. Nick cofounded the organisation with Climate Comms Lab, the Utopia Bureau.

With a background at the Royal Dramatic Theater where he was raised under Ingmar Bergman's wings, as well as a Hollywood career spanning three decades, Peter Stormare is undoubtedly one of Sweden's most famous actors. He played in blockbusters over the years, including Fargo, The Lost World: Jurassic Park, Armageddon, The Big Lebowski, Minority Report, Bad Boys II, Constantine and 22 Jump Street to name just a handful. Stormare is also a diligent television actor with memorable roles in Prison Break, Seinfeld, Entourage, Weeds, The Blacklist and Arrow among others.