As another wildfire season begins, Unfold heads into the burn zones of last year’s fires in Los Angeles County. UC Davis and University of California Agriculture and Natural Resources scientists are learning what the fires left behind — both on the ground and in the air. You’ll hear about one Altadena fire survivor’s efforts to save his oak trees and about a highly toxic carcinogen detected in the air over millions of people. Researchers are building a new kind of fire science, because the fires are changing and science is racing to keep up.In this episode:Alessandro Ossola, associate professor, UC Davis Department of Plant SciencesChris Shogren, environmental horticulture advisor, UC Agriculture and Natural ResourcesMichael Kleeman, professor, UC Davis Department of Civil and Environmental EngineeringRead an in-depth In Focus story on what scientists are learning from the fires in Altadena and the Palisades.