Stephen Mark Posner
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Bio

I am a scientist and senior advisor who leads nature-based initiatives. I build cross-sector collaborations that unite evidence, values, and practice to strengthen planetary health.

Currently, I serve as Director of the Pathways to Planetary Health initiative at the Garrison Institute. I’m also a co-author for a national science assessment, United by Nature, and a founding member of the Hudson Estuary Resilience Effort (HERE), where I am a cultural advisor for the integration of knowledge systems. 

Previously, as Director of Policy and Partnerships with the Gund Institute for Environment at the University of Vermont, I helped form a federal "Center of Excellence" on climate measurements and launched a new university-wide focus on environmental justice. I also led teams in producing the Vermont Climate Assessment and synthesizing biodiversity science for the Office of the Chief Economist in the U.S. Department of Agriculture. 

Over the past two decades, I have:
 • Built innovative collaborations to bridge science and policy,
 • Guided organizations to assess how they impact and depend on nature,
 • Directed and developed strategic initiatives to invest in planetary health, and
 • Co-authored over 50 publications and reports related to biodiversity, economics, and environmental policy.

Public work has appeared in The National Academy of Sciences, The Royal Society, journals like Sustainability Science, and outlets like the New York Times, The Hill, and Bloomberg Law. 

Based in northern Vermont and originally from Baltimore, Maryland, I received a B.S. in astrophysics from Haverford, studied science education at Stanford, and earned a Ph.D. in natural resources and ecological economics from the University of Vermont. Outside of work, I value time with family and nature in the Green Mountains. 

"My work is loving the world," (Messenger, by Mary Oliver). I carry a shared vision for regenerative, peaceful, and compassionate worlds.
 
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