

Discern Earth
David Valerio
Conversations that seek to make sense of life on Earth. www.discern.earth
Episodes
Mentioned books

Jul 28, 2025 • 60min
Candice Ammori on Community Building, Climate Tech, and Accepting Reality
In this episode I speak with Candice Ammori, founder and CEO of Climate Vine, a professional networking organization for climate tech professionals. Candice brings a unique perspective as an Iraqi-American from the Chaldean Catholic community who has navigated data science, international development, and now climate tech community building. We discuss:* How her upbringing in a close-knit Chaldean Catholic community of 60+ first cousins in Metro Detroit shaped her approach to building communities in climate tech.* The parallels between AI and climate change as systemic disruptions that capitalism in its current form may not survive.* Why 80% of successful community building is about filtering and selecting the right people, while only 20% is programming and events.* Her journey from studying AI ethics and biostatistics to focusing on climate after the 2018 IPCC report.* The importance of breaking down silos between technologists, activists, policy makers, and Global South perspectives in addressing climate change.* How accepting reality rather than fighting it has become central to her spiritual practice and approach to climate work. This is a public episode. If you would like to discuss this with other subscribers or get access to bonus episodes, visit www.discern.earth

Jul 15, 2025 • 1h 6min
Grant Mulligan on Absurdism, Wildlife Biology, and Positive-Sum Environmentalism
In this episode I speak with Grant Mulligan, a wildlife biologist by training who has worked across conservation finance, impact investing, and environmental progress. He currently writes the newsletter Progress Accumulation and is fellow at The Roots of Progress Institute. Grant brings a unique perspective as an atheist deeply committed to environmental stewardship, drawing on Camus's absurdism to find meaning in conservation work. We discuss:* How his atheist worldview, grounded in Camus's absurdism, shapes his joyful approach to environmental work and finding meaning through action rather than belief.* His journey from counting endangered species in the Arizona desert to working on conservation finance at The Nature Conservancy.* Why the shift from zero-sum to positive-sum thinking is essential for effective environmentalism that includes human flourishing.* How spending summers watching birds with his grandparents in Wisconsin led to discovering Aldo Leopold and a career in wildlife biology.* The critical role of economic thinking in conservation, from groundwater banking to renewable energy siting.* Why courage and incremental action, not grand ideas, are the limiting factors in environmental progress. This is a public episode. If you would like to discuss this with other subscribers or get access to bonus episodes, visit www.discern.earth

Jul 1, 2025 • 1h 3min
Silas Mähner on Catholicism, Climate Tech Recruiting, and Stewarding Earth
In this episode I speak with Silas Mähner, founder of ErthTech Talent, a recruiting firm focused on placing talent in early-stage climate tech companies. He's also the co-host of the Clean Techies Podcast. Silas brings a unique perspective as a devout Catholic working in climate tech, combining his faith-driven values with entrepreneurial ambition. We discuss:* How his Catholic upbringing in rural Wisconsin shaped his worldview and approach to work as service to others.* His journey from insurance sales to founding his own climate tech recruiting firm, driven by a search for meaningful work beyond financial success.* The challenge of being openly Catholic in a climate tech space often associated with progressive politics and secular worldviews.* Why climate tech founders often fail to learn from history, repeatedly attempting solutions that failed in Clean Tech 1.0.* How to balance human flourishing with environmental stewardship from a Catholic perspective that rejects both unchecked capitalism and anti-human degrowth ideology.* The importance of finding God in nature while avoiding making an idol of environmentalism itself. This is a public episode. If you would like to discuss this with other subscribers or get access to bonus episodes, visit www.discern.earth

Jun 10, 2025 • 1h 2min
Max Joshua on Space Science, Methane Monitoring, and LGBTQ+ Advocacy
In this episode I speak with Max Joshua, a commercial GTM specialist focused on applying satellite imaging technologies to climate problems. After we recorded our conversation, she joined the Earth Fire Alliance She brings a unique perspective from her journey through exoplanet research to Earth observation, combining technical expertise with a commitment to community building. We discuss:How her spiritual view of cosmic consciousness and interconnectedness drives her work in environmental monitoring and conservation.Her experience building commercial operations from scratch at Blue Skies Space, developing markets for exoplanet observation data among scientists and space agencies.The transition from studying distant worlds to using similar satellite technology to detect methane emissions on Earth through her work at Planet.Why being LGBTQ+ brings unique perspectives to climate work, requiring the same radical imagination needed to envision systemic change.The challenges and opportunities in commercializing satellite data for climate applications through her advisory firm, Atmos Impact.How spending time in nature and building community are essential components of a meaningful life in climate work. This is a public episode. If you would like to discuss this with other subscribers or get access to bonus episodes, visit www.discern.earth

May 27, 2025 • 1h 2min
Heidi Steltzer on Earth Science, Mysticism, and Theology
In this episode I speak with Dr. Heidi Steltzer, an Earth scientist with a background in high mountain and Arctic ecology who is now pursuing theological studies. She offers a unique perspective on the intersection of scientific inquiry and spiritual experience, drawing from three decades of research in high-altitude and Arctic environments. We discuss:* How her mystical experiences in remote mountain and Arctic landscapes led to a deeper understanding of Earth as a living relationship rather than an object of study.* Her spiritual journey from Lutheran upbringing through thirty years away from organized religion to returning to church and entering theology school in her late forties.* The development of her Center for Earth Theology in Colorado, designed as an immersive space for scientists, theologians, and entrepreneurs to explore the intersection of faith and environmental stewardship.* Why she believes we're experiencing a rising of human consciousness that's necessary to address global environmental crises through more than purely quantitative approaches.* How the practice of science can be a form of mystical discernment when approached with presence and openness to Earth's guidance. This is a public episode. If you would like to discuss this with other subscribers or get access to bonus episodes, visit www.discern.earth

May 1, 2025 • 1h 14min
Will Clayton on Christianity, Carbon Markets, and Purpose
In this episode I speak with Will Clayton, CEO of Sky Harvest, a forest carbon project developer that incentivizes small landowners to avoid harvesting their trees for climate impact. We discuss:* How his Christian upbringing shapes his current work in environmental markets.* How growing up in North Carolina's forests through scouting and hiking fostered his deep connection to nature.* His experience at BCG and how it shaped his approach to problem-solving in the environmental space.* Why the carbon market's failure to account for the time value of climate action represents a fundamental flaw that Sky Harvest is working to address.* The challenges of balancing ambition with what truly matters in life. This is a public episode. If you would like to discuss this with other subscribers or get access to bonus episodes, visit www.discern.earth

Apr 3, 2025 • 1h 7min
Jason Ethier on Energy Tech Startups, Absurdism, and Building Community
In this episode I speak with Jason Ethier, Founding Partner of the Energy Tech Nexus. He offers a thoughtful perspective on entrepreneurship in the energy technology space, drawing on his background in engineering and his philosophical approach to business building. We discuss:* How his spiritual journey through absurdism and Buddhism shapes his view that focusing on process rather than outcomes leads to greater fulfillment in entrepreneurship.* Why the Houston ecosystem offers unique advantages for energy transition startups through its combination of technical, business, and financial leadership.* How his experience founding Dynamo Micropower taught him crucial lessons about market timing and the challenges of innovating in established industries.* The evolution of startup support systems from traditional incubators to flexible community hubs like Energy Tech Nexus that adapt to founders' distributed needs.* Why creating transformational experiences for founders—helping them grow alongside their businesses—forms the core mission of his work. This is a public episode. If you would like to discuss this with other subscribers or get access to bonus episodes, visit www.discern.earth

Mar 13, 2025 • 59min
Sydney Rodman on Orthodox Judaism, Invasive Species, and Life-Affirming Environmentalism
In this episode I speak with Sydney Rodman, founder of Green Revival. She offers a refreshing perspective on nature and climate action rooted in Orthodox Judaism, challenging the doom-focused environmental movement with a life-affirming approach to solving ecological problems. We discuss:* How her journey to Orthodox Judaism shaped her ecological worldview and approach to business.* The concept of "sourcing" that connects her faith, scientific background, and company mission.* Why invasive species management presents both ecological challenges and economic opportunities.* How the Jewish concept of tikkun olam (repairing the world) informs environmental stewardship.* Why climate action must be centered on celebrating life rather than focusing exclusively on carbon. This is a public episode. If you would like to discuss this with other subscribers or get access to bonus episodes, visit www.discern.earth

Feb 20, 2025 • 1h 4min
Kaleo Fernandez on Hawai'i, Climate Tech, and Spirituality
In this episode, I speak with my good friend, Kaleo Fernandez. He currently works as a Business Development Manager at ProService Hawai’i. We previously worked together at Renoster. We discuss:* How growing up in the Hawaiian diaspora shaped his approach to bridging indigenous wisdom with modern climate solutions.* Why the Polynesian Voyaging Society's message that "Earth is our canoe" resonates deeply with climate action.* How his experience working on corporate sustainability at Watershed revealed the practical challenges of implementing climate solutions.* Why measuring and pricing biodiversity presents fundamentally different challenges than carbon accounting.* The delicate balance of bringing conscious capitalism to Hawai’i while respecting historical wounds.* How his spiritual journey through Buddhism and other traditions informs his approach to environmental stewardship. This is a public episode. If you would like to discuss this with other subscribers or get access to bonus episodes, visit www.discern.earth

Dec 10, 2024 • 1h 3min
James FitzGerald on Rewilding, Climate Adaptation, and New England
In this episode I speak with James Fitzgerald, Research & Policy Manager at BCarbon, a carbon credit registry focused on nature-based solutions. We discuss:• How the papaw tree and other evolutionary anachronisms reveal ancient relationships between extinct megafauna and modern plants.• The evolving concept of "invasive species" in our increasingly globalized and interconnected world.• The geological contrast between Long Island's climate vulnerability and New England's bedrock resilience.• The century-long transformation of New England from farmland to forest, enabling the return of native megafauna.• How Victorian "pteridomania" devastated native fern populations in Scotland and Wales, illustrating conservation challenges.• The remarkable adaptation of black bears to human-dominated landscapes in New York City's suburbs.• The complex interplay between human activity and natural systems in shaping modern ecosystems. This is a public episode. If you would like to discuss this with other subscribers or get access to bonus episodes, visit www.discern.earth