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Sustainability Defined

Sustainability Defined

Nethra Rajendran and Cecilia Rios 100 Episodes Sep 9, 2026

Sustainability Defined is the podcast that defines sustainability, one concept (and bad joke) at a time. Hosts Scott Breen and Jay Siegel explore a new topic each episode with the help of an expert in the field. Each concept falls into one of seven sectors -- Energy, Cities, Natural Environment, Transportation, Business, Policy, and Social -- and is visually represented in a Sustainability Tree found at www.sustainabilitydefined.com.

Episodes

Ep. 103: Mattresses & Forever Chemicals (ft. Naturepedic)
Ep. 103: Mattresses & Forever Chemicals (ft. Naturepedic) Sep 9, 2026 57:42 We spend a third of our lives on our mattresses, but what's actually in them? In this episode, we dig into the hidden world of the mattress industry: the flame retardants, petroleum-based foams, and PFAS ("forever chemicals") lurking in conventional mattresses, and what happens when millions of them end up in landfills every year, slowly breaking down and releasing toxins for decades? What happens
Ep. 102: The Power of Trees
Ep. 102: The Power of Trees Aug 7, 2026 50:12 Trees do so much more than make our neighborhoods beautiful. In this episode, we explore the surprising science behind why trees are essential for our mental and physical health, our communities, and our climate. In this episode Cecilia and Nethra discuss how spending time in nature can reduce stress and improve focus, why urban forests are critical for cooling cities and protecting public health,
Ep. 101: Plastic Free Beauty (ft. AORA Makeup)
Ep. 101: Plastic Free Beauty (ft. AORA Makeup) Jul 10, 2026 59:08 What does clean beauty actually mean and why does the industry still struggle to agree on a definition? In this episode, Nethra and Cecilia sit down with Nour Tayara, co-founder and CEO of Aura Makeup, a vibrant, plastic-free beauty brand born in Mexico City. A former L'Oréal sustainability lead turned engineer-entrepreneur, Nour breaks down why he ditched plastic packaging entirely in favor of a
A SPECIAL Ep. 100: Hot Commodities: Peanuts (ft. Once Again)
A SPECIAL Ep. 100: Hot Commodities: Peanuts (ft. Once Again) Jun 5, 2026 01:02:06 We are celebrating a major milestone with episode of 100 of Sustainability Defined! Before diving in, we have a special message for all of our incredible Definers who have been a part of this journey. Thank you for listening, learning, and helping us builld a community dedicated to making sustainability more accessible.  For this special epsiode, we are bringing back the Hot Commodities series joi
Ep. 99: Sustainability & Supply Chains (Ft. The Association for Supply Chain Management)
Ep. 99: Sustainability & Supply Chains (Ft. The Association for Supply Chain Management) May 8, 2026 01:01:32 In this episode of Sustainability Defined, we're switching things up! Before diving into one of our classic storytelling-style breakdowns, we sit down with Abe Eshkenazi, CEO of the Association for Supply Chain Management (ASCM), to unpack the world of sustainable supply chains. If you've been following our Hot Commodities series, you know we've become a little obsessed with supply chains, bec
Ep. 98: Hot Commodities: Sugar (ft. Fairtrade America)
Ep. 98: Hot Commodities: Sugar (ft. Fairtrade America) Apr 10, 2026 01:21:40 In this episode of Hot Commodities, we're diving into the sweet, and often bitter world of sugar. From sprawling sugarcane fields to the products lining our grocery store shelves, sugar is one of the most globally traded commodities, deeply embedded in our food systems and daily lives. But behind its ubiquity lies a complex supply chain shaped by labor challenges, environmental pressures, and grow
Ep. 97: Explained - The 2009 Endangerment Finding
Ep. 97: Explained - The 2009 Endangerment Finding Mar 20, 2026 48:26 In this episode, Nethra and Cecilia break down the EPA's 2009 Endangerment Finding, the foundation of federal climate regulation in the United States.  As repeal efforts gain attention, this episode explores what the Endagerment Finding is, why it matters, and the legal challenges that could impact the EPA's authority to regulate greenhouse gases.  From the courts to future climate policy, this ep
Ep. 96: Hot Commodities: Bananas (ft. Equifruit)
Ep. 96: Hot Commodities: Bananas (ft. Equifruit) Feb 13, 2026 01:06:09 Terrorism, corporate pay-offs, open-fire raids, rebranding and scandal....yes, we are talking about bananas. In this episode of our Hot Commodities series, we're peeling back the layers on the world's most popular fruit to reveal a history of corporate empires, political coups, and systematic exploitation that shaped entire nations. From the United Fruit Company's control over "banana republics" t
Ep 95: The State of ESG in 2026
Ep 95: The State of ESG in 2026 Jan 12, 2026 01:20:37 We cut through the noise and jargon to define what ESG actually is and what it isn't. ESG feels like a sea of acyromns and alphabet soup, we help you understand the state of the current landscape and different reporting frameworks. Whether you're new to sustainability reporting or a seasoned professional, join us as Marcy Twete of Veerless helps us breaks down the fundamentals in clear, accessibl
Ep 94: 2025 Holiday Hodge Podge
Ep 94: 2025 Holiday Hodge Podge Dec 5, 2025 45:52 In this festive year-end episode, Cecilia and Nethra are mixing it all together, personal updates, podcast reflections, and the sustainability success stories that made us smile this year. From quirky innovations to feel-good climate wins, we're spotlighting the moments that brought a little extra hope to 2025. We also share our favorite tips for sustainable gift-giving, low-waste holiday traditio
Ep 93: Sustainability at the Thanksgiving Table - Joy, Burnout, and Hope (ft. Soapbox Project)
Ep 93: Sustainability at the Thanksgiving Table - Joy, Burnout, and Hope (ft. Soapbox Project) Nov 7, 2025 01:10:18 This week on Sustainability Defined, Cecilia and Nethra are bringing the conversation to the Thanksgiving table.  We're breaking down how to talk about the climate crisis with the people we love, tackling eco-guilt and burnout, and navigating hope.  Join us for a chat with Nivi Achanta, the founder of The Soapbox Project , about the power of remaining joyful when approaching sustainability and com
Atypical Ep. 11: The Green Skills Gap (ft. Leafr)
Atypical Ep. 11: The Green Skills Gap (ft. Leafr) Oct 23, 2025 45:21 In the hot seat this week - Nick Valenzia, Co-Founder of Leafr. We sat down with Nick to understand the "Green Skills Gap" and what that means in an economy where getting a job in sustainability feels so difficult. How is AI influencing the green jobs market? How is the lack of specialized sustainability professionals holding back global climate goals? What do professionals need to be aware of in

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