Esther Landhuis is a freelance science journalist based in the San Francisco Bay Area. Her stories have appeared in Scientific American, Nature, NPR, Science News, Undark, Medscape and elsewhere. She has covered all aspects of biomedicine, from bench science to clinical trials. She's drawn to dogma and disruption, and how science intersects with social issues. Lately she has written about food allergies, systemic racism in STEM and surprising roles of less-studied immune cells.