Monday host Patty Peltekos speaks with Marcia DeLonge, senior scientist in the Food & Environment Program at the Union of Concerned Scientists. They’re in conversation about Earth and its issues, with particular emphasis on soil, farmland, and agroecology. Dr. DeLonge has a Ph.D. and M.S. in environmental science from the University of Virginia, where she developed expertise in atmospheric science, hydrology, ecosystem science, and numerical modeling. She also earned a B.A. in environmental science from Northwestern University.