Dr. Tanya Shirman Ph.D and Sissi Liu

Dr. Tanya Shirman Ph.D. is a chemist and material scientist with over a decade of experience leading multidisciplinary R&D teams. Her expertise extends to nano-structured materials design and synthesis for catalytic and air-purification applications and extends to translating transformative technologies from lab to market. Tanya is co-founder and VP of Materials in Metalmark Innovations, PBC. - Harvard startup focuses on improving indoor air quality and balancing energy and climate goals through developing and integrating innovations in materials science, engineering, data analytics, and machine learning.

Sissi Liu is passionate about solving complex societal problems with cutting-edge technology. She has 20 years of experience in climate tech and sustainability, entrepreneurship, and venture investing. Sissi co-founded Metalmark Innovations, where she is CEO, to tackle the global air pollution crisis and climate change challenges.