Marcelo Medeiros, co-founder and CEO of re.green, joins Climate

Marcelo explains how re.green combines data science, forest

Marcelo also shares how winning the Earthshot Prize brought global visibility, how AI is improving ecosystem planning, and how the company

This episode is a part of our Global South series. Explore

As bonus episode of Climate Rising, we feature a

This conversation, based on the HBS case “Tata Power and

This episode is part of Climate Rising’s Global South series, which features companies and organizations at the intersection of business and climate in India and Brazil. Explore more episodes at climaterising.org.

Parth Jindal and Prabodha Acharya of JSW Group join Climate

The conversation explores India’s dual challenge: meeting

This is part of our Global South series, which also

Galen Nelson, Chief Climate Officer at the Massachusetts

Galen shares examples across climate tech verticals including energy efficiency, carbon-intensive materials like cement, and urban heat resilience. He also discusses how MassCEC is responding to the shifting

Jonathan Schrag, Deputy Climate Chief for the Commonwealth

He discusses the state’s emissions targets, the role of

Hui Wen Chan, Senior Director of Sustainability at Crusoe, describes

She also shares why Crusoe emphasizes modularity and location-based energy sourcing, and how its customers—ranging from AI startups

This episode is a part of our HBS alumni series, which also features Eric Adamson who works on agricultural robotics at Oishii, and Danielle Colson who works at Mantel, a carbon capture technology start-up. Visit our website (climaterising.org) to explore the entire series!

Danielle Rapson, HBS alum and Co-founder and COO of Mantel, joins Climate Rising to explain how her company is developing a novel molten-based carbon capture system for hard-to-abate industrial sectors. Danielle shares the story of how Mantel spun out of an MIT lab, what sets its technology apart from existing amine-based carbon capture, and why the economics of steam reuse are critical to its efficiency. She also discusses how Mantel’s early projects in pulp and paper and oil refining are shaping its path to commercialization, and what policy and regulatory incentives—like 45Q and Canada’s carbon tax—mean for scaling carbon removal solutions.

Fred Krupp, president of the non-profit Environmental Defense Fund (EDF), describes EDF’s work to address climate change through scientific, economic, and legal analyses, working with

governments and companies, and public and legal advocacy for stronger climate and other environmental practices and policies. Fred joined us to talk about MethaneSAT, EDF’s new satellite that was recently launched to monitor emissions of methane, a potent greenhouse gas, from oil and gas operations. Fred describes why EDF entered the satellite business, how its satellite differs from others already in orbit, the many partners EDF enlisted to design and

deploy the satellite, how AI is deployed in the process, and what new opportunities this satellite will provide for EDF and the rest of us.

Eric Adamson, Robotics Executive at Oishii and co-founder of Tortuga AgTech, joins Climate Rising to share how automation and AI are transforming fruit farming. Eric explains how his team designed a strawberry-harvesting robot capable of operating in outdoor tunnels and vertical farms, bringing operational efficiency, labor savings, and climate resilience to high-value crops. He discusses why harvest is the hardest—and most impactful—problem in agriculture to automate, what it took to move from lab demo to field-scale deployment, and how they integrated custom robotics and 17 on-device AI models to achieve 97% picking accuracy. Eric also shares his climate thesis on why controlled environments reduce emissions, waste, and chemical use, and how UV-powered robots and environmental buffering help adapt to floods, fungi, and labor volatility.

Microsoft’s Brian Marrs, Senior Director of Energy and Carbon Removal, and Chestnut Carbon CFO Greg Adams share their perspectives as a major buyer and developer of carbon removal credits. Their 2025 deal is one of the largest carbon removal deals in the U.S. and seeks to deliver 7 million tons of nature-based carbon credits over 25 years. 

Brian explains Microsoft’s carbon negative strategy and targets, and the role of carbon removal credits. He also describes how Microsoft is using its Climate Innovation Fund and procurement efforts to “build missing markets” in decarbonized energy, materials, and transportation. 

Greg describes how Chestnut Carbon combines afforestation, land ownership, and a private equity-backed project development model to deliver high-integrity carbon credits. He explains how their work is similar to long-term energy infrastructure contracts like power purchase agreements (PPAs), and how they are using proprietary tools to scale.  

Brian and Greg also share their advice for those looking to learn more and work in the field.