Chico, California, resident Jessie Raeder dug her fingers into the dirt. Before she arrived, she’d been in a “state of clenching,” she said, but this forest therapy walk in the Butte Creek Ecological Reserve left her feeling calmer. The sessions were intended to support locals like Raeder, who live in areas that have burned in wildfires. The guide invited her and the other participants to feel nearby textures — perhaps the roughness of bark, wet grass, or the smoothness of a rock. Raeder held dirt in her hands and noted its earthy aroma. “For me, it was definitely a familiar and welcome smell of childhood,” she said. “These sessions were very soothing and grounding and left me feeling refreshed and enlivened.”