Dr. Sweta Chakraborty is the CEO of North America, We Don’t Have Time. She is a partner at Pioneer Public Affairs. She is also the founder and principal of Adapt to Thrive, a venture that seeks to better inform individuals, businesses, and government entities on the complex, interconnected challenges, such as food insecurity and disease, already existing and emerging from a warming planet.

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.

Carlos Manuel Rodríguez was selected as CEO and Chairperson of the Global Environment Facility in June 2020. Rodríguez, a Costa Rican national, was a pioneer in the development of Payment for Ecosystem Services and strategies for forest restoration, ocean conservation, and decarbonization. During his three terms as Environment and Energy Minister, Costa Rica doubled the size of its forests, made its electric sector fully renewable, and consolidated a national park system that has made the Central American country a prime ecotourism destination. Rodríguez has also founded and served on the board of several environmental NGOs and tropical research institutes. After his second tenure as minister, he was Vice President for Global Policy at Conservation International for 12 years.

Katharine Hayhoe is an atmospheric scientist whose research focuses on understanding the impacts of climate change on people and the planet. She is the Chief Scientist for The Nature Conservancy and a distinguished professor and endowed chair at Texas Tech University. She has received numerous awards, honorary degrees, and recognitions for her work, including being named one of the TIME 100 most influential people and a United Nations Champion of the Earth.

Marco Lambertini is the Convener of the Nature Positive Initiative. Marco was WWF International Director General (2014-2022) and Special Envoy (2023). Before joining WWF he was Global Director of Network and Programme and subsequently CEO of BirdLife International. Marco is the lead author of the recently published book “Becoming Nature Positive: transitioning to a safe and just future” (2025, Earthscan Routledge, London). Marco’s experience and career ranges from ecological field research to high level advocacy and international policy, nature reserve management, integrated conservation and development projects, environmental education, NGO development, communications and campaigning, in many countries all over the world.

Bernadette Woods Placky is Climate Central’s VP for Engagement, Chief Meteorologist, and directs the Climate Matters program where she helps the public understand the importance of climate change science, impacts, and solutions. In her role, she develops partnerships with media organizations, non-profits, academic institutions, government offices, and more; leads a team that creates weekly, local data and other reporting resources for a large and growing network of media professionals; and serves as an expert on the links between climate change and weather. Bernadette previously worked for more than a decade as a TV meteorologist, where she won an Emmy for Best Weathercaster. Other awards include being named an AMS fellow and Penn State Earth and Mineral Sciences fellow. She’s been elected to the National Academy Board of Atmospheric Science and Climate, the AMS Council, and is a science advisor for C-Change Conversations. She also serves on the Princeton Wrestling Club Board.

Michael Gerrard is a professor at Columbia Law School and founder and faculty director of the Sabin Center for Climate Change Law. He formerly chaired the faculty of Columbia's Earth Institute and now has a joint appointment to its successor, the Columbia Climate School. He practiced environmental law full time in New York between 1979 and 2008 before moving to Columbia. He is author or editor of 14 books in the field.

Karin has been Chief Sustainability Officer at Volvo Group since April 2022. She leads the company’s sustainability transition towards a fossil-free future – through a unique approach to cross-sectoral partnership and an ambition to drive sustainable solutions and practices across the supply chain. Her expertise plays a key role in helping Volvo move closer to 100% fossil free vehicles by 2040 while inspiring other industry players to enhance their own decarbonization journey. Prior to this, she held various managerial positions at Volvo Group since 1996, lately as Senior Vice President Public Affairs (2018-2022). She has also held roles as Vice President Group Strategy, President Volvo Technology North America and a number of positions in Research & Development.

Jonathan Foley, Ph.D., is the executive director of Project Drawdown, the world's leading guide for science-based climate solutions. He is a world-renowned environmental scientist, sustainability expert, author, and public speaker whose work focuses on understanding our changing planet and increasing the adoption of the most promising solutions to sustain the climate, ecosystems, and natural resources we all depend on.

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.

Tara Helms serves as Director of Sustainability for Electrolux Group, an organization committed to shaping living for the better through its product innovation and design that help consumers make more sustainable choices in the home. Each day, Tara ambitiously drives sustainable actions across the North American business region, home to 10,000 employees. Her work elevates Electrolux Group as an industry leader in sustainability and has contributed to the organization being named as TIME Magazine’s Most Sustainable Companies of 2025.

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.

Guido Núñez-Mujica is a Data scientist and climate activist interested in climate finance, nuclear power, and developing countries.

Laura A. Schifter, EdD, is a senior fellow with the Aspen Institute where she founded and directs This Is Planet Ed, an initiative to unlock the power of education as a force for climate solutions to empower the rising generation to lead a sustainable and resilient future. In 2025, Schifter co-authored Students, Schools, and Our Climate Moment: Acting Now to Secure Our Future to provide a framework for climate action in schools and share inspiring stories from parents, educators, and leaders nationwide. She also serves as a Senior Advisor for SustainableED with the Annenberg Institute at Brown University.

Hikaru Wakeel Hayakawa is a twenty-three year-old Guyanese and Japanese American climate justice activist. He serves as the Executive Director of Climate Cardinals, leading a community of 16,000 youth in 134 countries and 130 chapters in 33 countries focused on empowering youth and non-English-speakers at the forefront of climate solutions.

Kristy Drutman, otherwise known as “Browngirl Green” is a speaker, consultant, media producer, and environmental educator passionate about working at the intersections between media, diversity, and environmentalism. As a young entrepreneur, Kristy has educated hundreds of thousands of people across the globe about modern-day environmental issues through speeches and media content as well as facilitates workshops centered around environmental media and storytelling in cities across the United States. Kristy is also the Co-Founder of the Green Jobs Board, a climate tech start-up bridging the equity and inclusion gap within the green economy through conversations, resources, and pathways to bring more diverse talent into the environmental field.

Mike is Chief of WMO's Climate Research Section and heads the Secretariat for the World Climate Research Programme. Mike is a Southern Ocean oceanographer, with a PhD in Oceanography, a Masters degree in Climate and Atmospheric Sciences, and a Bachelors in Physics. In his 'spare' time Mike likes to train for triathlons, surf, and do obstacle course racing, whilst trying to keep up with his teenage sons.

Matt Barga is President of Life Science Solutions, a business unit of Trane Technologies. In this role, Matt oversees a broad portfolio of differentiated, precision-temperature controlled, end-to-end solutions and services for healthcare, bioscience and life science customers. Since joining Trane Technologies in 2009, Matt has held a variety of general management, sales, product management and procurement roles of increasing responsibility, including as General Manager for Helmer Scientific and General Manager for Trane Rental Services. Matt began his career in supply chain, holding various roles at Delphi, Intel and Bausch & Lomb. He has over 20 years of experience in delivering business growth while maintaining a commitment to excellence and meeting the customers’ needs.

Laura Paterson is a meteorologist by training, and has provided weather services to a wide range of sectors - transport, energy, retail, defence, public services. She now represents the work of the WMO (the UN agency for weather, climate and water) to the United Nations in New York.