Jude Addo-Chidie, a Ph.D. student in agronomy at Purdue University, places a probe in soil as he takes samples from a corn field July 12, 2023, at the Southeast-Purdue Agricultural Center in Butlerville, Ind. (AP Photo/Joshua A. Bickel, File)
Erin McGuire spent years cultivating fruits and vegetables like onions, peppers and tomatoes as a scientist and later director of a lab at the University of California-Davis.