Hong Duan is a Systems Analyst and Application Developer at Risk Sciences International, where she has applied her expertise since 2011. She holds a Bachelor of Computer Science degree from the University of Ottawa and is certified as a Microsoft .NET Professional Developer. Hong specializes in developing database-driven, risk-based web applications.

Monique MacDonald is a seasoned Office Administrator with over thirty-five years of experience ensuring the smooth and efficient operation of office environments. She joined Risk Sciences International (RSI) in 2017, where she oversees the full range of internal operations and provides essential support across RSI’s scientific, operational, and client engagement activities. Her responsibilities include bookkeeping, financial support such as budgeting, invoicing, and expense tracking, as well as sales and marketing support. She also serves as operational and logistics coordinator for RSI’s convening events, including training sessions, workshops, and meetings.

As a Senior Advisor and Associate Expert with Risk Sciences International, Dr. Leiss contributes unparalleled insight into the design, delivery, and evaluation of risk communication strategies for government, regulatory bodies, and civil society. His legacy work in building public trust around controversial science and his decades of thought leadership on consensus-building, science-based policy, and societal responses to risk make him a foundational contributor to RSI’s mission.

Rosanna Wong is a Junior Risk Analyst at Risk Sciences International (RSI), where she supports multidisciplinary projects at the intersection of climate resilience, food systems, and public safety. Since joining RSI in 2021, Rosanna has contributed to a broad range of research areas, including foodborne disease, intentional food adulteration, transportation and natural disaster risks, and climate change adaptation strategies.

Dr. Michael G. Tyshenko is a Senior Health Risk Analyst at Risk Sciences International (RSI), where he has contributed since 2018 to some of the organization’s most complex and cross-cutting public health risk projects. As RSI’s lead on chemical peer reviews, he brings extensive experience in regulatory science, biological risk, and science-policy integration to high-stakes evaluations that require both deep expertise and clear communication.

Dr. Larkin serves as an Associate Expert at Risk Sciences International, specializing in policy, regulatory analysis, and population health risk assessment. Her work with RSI has included life cycle assessments of metals, as well as a review of Alberta’s Water Cytotoxicity Testing Program. She contributes rigorous, equity-sensitive approaches to risk analysis, and brings a nuanced understanding of the intersections between policy, science, and public values.

As a Microbiologist with Risk Sciences International, Dr. Sattar contributes his deep expertise in pathogen ecology, environmental microbiology, and infection control technologies to support RSI’s work in health risk assessment and risk mitigation. His insights guide RSI’s contributions to evidence-based disinfection strategies, microbial exposure modelling, and policy-relevant evaluations of infectious disease risk across water, air, food, and surface-contact pathways.

Dr. Emma Hartnett is Vice-President, Risk Modelling and Simulation at Risk Sciences International (RSI), where she has been a foundational member since its inception in 2006. A globally recognized authority in quantitative risk assessment (QRA), she specializes in developing risk models and decision support tools for complex public health and safety challenges across biological, chemical, and environmental domains.

Since joining Risk Sciences International in 2019, Martin has served in Business Development, leading RSI’s business expansion efforts across Canadian and global markets. He is instrumental in identifying and qualifying opportunities, coordinating multidisciplinary proposal teams, developing project frameworks, and supporting contract negotiations. His expertise spans the entire procurement spectrum, including competitive tenders, standing offers, supply arrangements, and unsolicited proposals.

Don Mattison's career is an amalgamation of medicine, science, and public service. He started with a Bachelor's degree in Chemistry and Mathematics, followed by a Master's from MIT in Chemistry. He then pivoted to medicine, obtaining an MD from Columbia University and focusing on pharmacology and toxicology in reproductive health during his residencies. Mattison has held several prestigious appointments, including Dean of the University of Pittsburgh's Graduate School of Public Health and Chief Medical Officer at Risk Sciences International. Throughout his career, he obtained medical licenses in six U.S. states and served in the U.S. Public Health Service, retiring with the rank of Captain. Most recently, he became a Distinguished Professor of Epidemiology at the University of South Carolina.