× CEN's 2020 Trailblazers Frances Arnold: Directed-evolution pioneer Carolyn Bertozzi: Glycoscience revolutionary Samantha Du: Setting new standards for biotechs in Asia Naomi Halas: Nanotech guru Paula Hammond: Drug-delivery maven Yamuna Krishnan: Developing DNA nanodevices to track and fight disease Olga Malinkiewicz: Making good on the promise of perovskites Mariana Matus: Combating the opioid epidemic with wastewater data Kiran Mazumdar-Shaw: One of the world’s most powerful businesspeople Erika Milczek: Replacing banned chemicals in consumer products Amy Prieto: Building a better, safer battery Sarah Richardson: Engineering wild microbes to produce useful chemicals Amy Ripka: Taking a new approach to drugging neuro diseases Cristina Sáenz de Pipaón: Trapping carbon dioxide with innovative membranes Miranda Wang and Jeanny Yao: Aiming to make high-performance treasure from plastic trash The women of CRISPR Keeping up with Jennifer Doudna Entrepreneurship 101: Jennifer Doudna’s top tips for success Behind the scenes: Learn more about how we produced this issue