What was the carbon footprint of your dinner last night? Physician Walter Willett, who served as the long-time Nutrition Dept. chair at Harvard, describes the benefits of eco-friendly eating to your health and to the environment. And you’ll meet Olivia Calkins, Liam Reardon and Genesis Butler,...

Agriculture is a huge emitter of greenhouse gases associated with climate change. This is an important emerging topic as Americans grapple with record-breaking heatwaves, drenching rains, coastal flooding, prolonged droughts, sprawling wildfires and other weather extremes as “the face of global...