Tim LaSalle
Soil scientist at Cal State Univ in Chico, speaking at a news conference, 26 Oct. 2021. LaSalle says he is also a walnut farmer, and was harvesting walnuts, which is why his hands are dirty. Smugmug: https://technewslitphoto.smugmug.com/National-Press-Club-events/Various-events/i-528CkG7/A