Climate Change, Environment & Food Archives

E286: How ‘least cost diet’ models fuel food security policy

October 31, 2025

Governments use something called a ‘least cost diet’ to monitor food access, inform policy discussions, and target interventions to improve food security and nutrition. So, what is the least cost diet? Well, it’s a minimum amount of money needed to purchase a nutritionally adequate diet. Today we are lucky to have two researchers who share an interest in working with least cost diets, understanding their efficacy and thinking about that both domestically in the US and internationally. Our guests today are food and nutrition policy economists Will Masters and Parke Wilde from Tufts University’s Friedman School of Nutrition, science and Policy.

E282: Are healthy, environmentally sustainable diets economically achievable for everyone?

September 17, 2025

In today’s episode, we’re discussing the complex and urgent topic of global food demand. The United Nations Sustainable Development Goals, or SDGs, ask countries to make measurable progress in reducing poverty, achieving zero hunger, and supporting every individual in realizing good health. While also mitigating climate change, sustaining the environment and responsible consumption and production habits. Researchers have recommended sustainable diets – planetary health diets. For example, the Eat Lancet Planetary Health Diet. However, others have criticized some of these diets for not addressing the economic and social impacts of transitioning to such diets. Is it possible to balance changing diets, rising incomes, and economic growth with economic feasibility, environmental impact, and long-term sustainability? Well, that’s what our goals are today. Our guests today are Andrew Muhammad of the University of Tennessee Institute of Agriculture, and Emiliano Lopez Barrera from Texas A&M. They are my co-authors on a new paper in the Annual Review of Resource Economics entitled Global Food Demand: overcoming Challenges to Healthy and Sustainable Diets.

E279: Feed Us With Trees – the surprising importance of nuts

July 31, 2025

Every day, with few exceptions, I eat a handful of nuts. Usually a combination of almonds, walnuts, pecans, cashews, and pistachios. And they taste good for sure. But I’m responding mainly to research showing that consumption of nuts is related to less chronic disease. In particular, eating nuts lowers levels of inflammation related to heart disease and diabetes, and may improve cholesterol levels among other benefits. So, I saw it as welcome news that someone has just published a book about nuts, all aspects of nuts, actually. Today we’re joined by NPR, food Writer Elspeth Hay author of a new book called Feed Us with Trees- nuts, and The Future of Food. And I had no idea. Nuts were so interesting until I dove in a little bit. Elspeth has gathered stories from dozens of nut growers, scientists, indigenous knowledge keepers, researchers and food professionals. She writes that humans once grew their staple crops in forest gardens of perennial nuts, such as oaks, chestnuts, and hazelnuts in these species. Particularly important to the environment as well as to human wellbeing.

E276: Climate Change – A little less beef is part of the solution

June 20, 2025

Interest and grave concern have been mounting over the impact of agriculture and the food choices we all make on the environment, particularly on climate change. With natural weather disasters occurring much more frequently and serious threats from warming of the atmosphere in general, it’s natural to look for places to make change. One person who has thought a lot about this is our guest today, Dr. William Dietz of George Washington University. He’s been a prominent voice in this space. Bill, you’re one of the people in the field I respect most because our relationship goes back many years. Bill is professor and director of research and policy at the Global Food Institute at George Washington University. But especially pertinent to our discussion today is that Dr. Dietz was co-chair of the Lancet Commission on the global syndemic of obesity, under nutrition and climate change. Today, we’ll focus on part of that discussion on beef in particular.

Related podcasts: Agriculture & Tech | Alternative Proteins | Climate Change, Environment & Food | Regenerative Agriculture |

E275: Against the Grain – A Plea for Regenerative Ag

June 16, 2025

I was at a professional meeting recently and I heard an inspiring and insightful and forward-looking talk by journalist and author Roger Thurow. Roger was a reporter for the Wall Street Journal for 30 years, 20 of them as a foreign correspondent based in Europe and Africa. Roger has written a number of books including one on world hunger and another what I thought was a particularly important book entitled The First 1000 Days, A Crucial Time for Mothers and Children and the World. Now comes a new book on farmers around the world and how they are coping with the unprecedented changes they face. It was hearing about his book that inspired me to invite Mr. Thurow to this podcast and thankfully he accepted. His new book is entitled Against the Grain: How Farmers Around the Globe are transforming Agriculture to Nourish the World and Heal the Planet.

Related podcasts: Advocacy & Food | Agriculture & Tech | Climate Change, Environment & Food | Voice of Farming |

E273: Feeding innovation by taste testing alternative proteins

May 29, 2025

As someone who’s been mostly vegetarian for a number of years, I have tried a lot of plant-based foods and there’s a variety of them. And so how do they really taste, not just from my perspective? Well, it’s really important to do really careful analysis, and this is going to be the subject of our conversation today. Plant-based foods are becoming increasingly healthier and cheaper. But one large question really remains for consumers. How do they taste. NECTAR, a nonprofit initiative on a mission to accelerate the alternative protein transition sets out to answer this question. Through large scale blind taste tests with thousands of consumers. NECTAR is amassing the largest publicly available sensory database on alternative protein products. In its latest report, Taste of the Industry 2025, NECTAR conducted blind sensory panels of 122 products across 14 categories and uncovered which products have achieved the taste that’s on par with their animal-based counterparts. Today we talk with NECTAR’s Director, Caroline Cotto, about which products are meeting and exceeding consumer taste expectations and what the alternative protein industry needs to do to get more products to this level. And how NECTAR’s novel dataset can be used to get there faster.

Related podcasts: Agriculture & Tech | Alternative Proteins | Climate Change, Environment & Food |

E272: Why getting food date labeling right is so darn tough

May 22, 2025

Do you pay attention to information printed on food labels? From eye-catching designs companies use to entice you to buy a product to nutrition facts panels to the tiny dates printed on packages. There’s a lot going on to be sure. For policymakers, they hope that refining date labels on food packaging will help reduce the amount of uneaten food ending up in landfills. Food Waste is a major contributor to greenhouse gas emissions. The Food and Drug Administration and the Food Safety and Inspection Service recently asked for public input on food date labels. So, we decided to gather some experts together to talk about this important policy tool. Roni Neff is a professor in the Johns Hopkins Bloomberg School of Public Health and Senior Advisor at the School’s Center for a Livable Future. Her research looks at the intersection of food waste policy, climate change, and food system resilience. Brian Roe is a professor at the Ohio State University Department of Agricultural, Environmental and Developmental Economics. His work focuses on issues including agricultural marketing, information policy, behavioral economics, and product quality. Ruiqing Miao is an associate professor of agricultural economics and rural sociology at Auburn University’s College of Agriculture. His research emphasizes sustainability, innovation, and decision making.

Related podcasts: Climate Change, Environment & Food | Food Industry Behavior & Marketing | Food Waste & Implications |

E268: Why Corporate Control of Agriculture is Cause for Concern

March 26, 2025

How big is too big? When it comes to corporate concentration many observers raise concerns about the tech industry. However, in the new book, Titans of Industrial Agriculture: how a few giant corporations came to dominate the farm sector and why it matters, political economist Jennifer Clapp draws attention to the overwhelming shadow a small handful of transnational corporations cast over the global agricultural sector. Professor Clapp argues that these corporations hold concentrated power over the agricultural sector that keep industrial agricultural practices entrenched in patterns of production, despite the concerns of the social, ecological and health impacts to society. She explains how we got to this point and what it might take to make changes. Jennifer’s work at the intersection of the global economy, food security, and food systems, and the natural environment, looks specifically at issues of global governance. She is currently a member of the International Panel of Experts on Sustainable Food Systems, and a member of the Scientific Advisory Committee of the UN Food Systems Coordination Hub.

E267: Nzatu uses bees and ancient grains to uplift African farmers

March 24, 2025

The climate crisis is devastating the ability of African farmers to support themselves and their communities. Farmers struggle with a lack of running water, electricity, communications, and public transportation. Entire communities are often cut off from the larger world, exacerbating and extending the poverty crisis that grips large parts of the continent. To overcome these issues, our guest, Gwen Jones, co-founded Nzatu Food Group, a regenerative agriculture business designed to protect biodiversity and mitigate climate change. Nzatu Food Group has done some remarkable pioneering work. Gwen is connected to 15,000 Sub-Saharan farmers across 15 countries through beekeeping, sustainable agricultural and conservation training, and by building an increasingly international market for farm products.

E264: Citizen engagement in post-Brexit UK food and farming policy

February 17, 2025

Today we’re exploring civil society’s efforts to shape the food system and land use in the United Kingdom. Our guest today is Sue Pritchard, Chief Executive of the Food, Farming, and Countryside Commission (FFCC). The deeply grassroots work of the commission brings people together to find practical solutions to climate, nature, and health challenges. The goal is to shape fairer and more sustainable food systems and a just transition for rural communities and the countryside.

Podcast Topic: Climate Change, Environment & Food

The Leading Voices in Food

Podcast Topic: Climate Change, Environment & Food

E286: How ‘least cost diet’ models fuel food security policy

E282: Are healthy, environmentally sustainable diets economically achievable for everyone?

E279: Feed Us With Trees – the surprising importance of nuts

E276: Climate Change – A little less beef is part of the solution

E275: Against the Grain – A Plea for Regenerative Ag

E273: Feeding innovation by taste testing alternative proteins

E272: Why getting food date labeling right is so darn tough

E268: Why Corporate Control of Agriculture is Cause for Concern

E267: Nzatu uses bees and ancient grains to uplift African farmers

E264: Citizen engagement in post-Brexit UK food and farming policy