Gabrielle Walker

Leading expert on climate change and sustainable energy

Speaker Themes

  • Sustainability
  • Climate change
  • Net Zero Targets
  • Negative Emissions
  • ESG/Climate Finance
  • Renewable energy
  • Global leadership on sustainability

Travels from

London, UK


Gabrielle Walker is an expert strategist, speaker and moderator, helping businesses to address global challenges—with a focus on sustainability, new energy and climate change. Gabrielle is a TED speaker and has a strong background in building new narratives and engagement across a wide range of sectors. She works at boardroom-level with a broad set of global companies to analyse emerging global trends, challenge conventional thinking and turn analysis into meaningful action.  

Gabrielle is the founder of Valence Solutions, where she brought together a team with decades of corporate expertise and deep personal commitment to accelerating action on the climate crisis. Using innovative meeting design, Valence Solutions provides a safe space for fresh conversations across perceived divides, thus developing a wider set of practical solutions to help tackle the most difficult and least addressed climate challenges. Through its partnership with the UNFCCC High Level Champions for Climate Action, Valence Solutions participated in many COP26 events in Glasgow.

Gabrielle Walker gives keynote addresses to corporate audiences around the world and is an accomplished moderator of high-level debates, guiding panels involving global CEOs, former heads of state, government ministers, military generals and global humanitarian leaders.

She has presented many TV and radio programs for the BBC. She has been Climate Change Editor at Nature and Features Editor at New Scientist and has written extensively for many international newspapers and magazines, including The Economist, Prospect, The Wall Street Journal and The New York Times. She is the author of four books including co-authoring the bestselling book The Hot Topic, how to avoid global warming while still keeping the lights on, which was described by Al Gore as “a beacon of clarity” and by The Times as “a material gain for the axis of good”.

Her work has taken her around the world where she has visited the North and South poles, climbed trees in the Amazon, swum with piranhas and taken lava from an active volcano.   

Gabrielle Walker has a PhD from Cambridge University and has taught at both Cambridge and Princeton.

An prolific author, Gabrielle Walker has published:  ‘Snowball Earth: The Story of a Maverick Scientist and His Theory of the Global Catastrophe That Spawned Life as We Know It (2004)’, ‘An Ocean of Air (2007)’, ‘The Hot Topic: What Can We Do About Global Warming (2008)’, ‘The Hot Topic: How to Tackle Global Warming and Still Keep the Lights On (2009)’ and ‘Antarctica: An Intimate Portrait of the World’s Most Mysterious Continent (2013)’.

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A trained scientist and highly respected author and broadcaster, Gabrielle has dedicated her life to tackling the challenges of climate change. With expertise and humour, she advises governments and companies at the highest level on the opportunities and challenges posed by the climate crisis.

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