Dr. Paul Price is a Senior Analyst at Risk Sciences International (RSI), bringing over four decades of experience as a pioneer in exposure science and chemical risk assessment. Since joining RSI in 2019, Dr. Price has focused on advancing mixture risk assessment—an increasingly vital area as regulators shift from assessing single chemicals in isolation to understanding the cumulative effects of combined exposures. His current work includes the development of Mixture Adjustment Factors, participation in international regulatory committees, and authorship of scholarly publications aimed at refining the science-policy interface of chemical mixture risk.

Dr. Al-Zoughool has maintained a long-standing relationship with Risk Sciences International, both as a scientific collaborator and as a co-investigator on complex international projects. His work with RSI focuses on high-level public health risk modeling, mechanistic data analysis, and toxicological risk assessment of major environmental contaminants in air, soil, and water, including formaldehyde, lead, and 1,4-dioxane. His research also extends to methodological innovation and the development of evidence-based strategies for environmental and occupational health policy.

Sean Hart is RSI’s Finance Officer and Bookkeeper, where he manages the company’s core financial operations and supports project-level accounting. With a strong command of both accounting principles and digital systems, Sean ensures the integrity, accuracy, and compliance of RSI’s financial records and reporting.

Dr. Willhite is an Associate Expert at Risk Sciences International, where he supports the development of quantitative health risk assessments for both naturally occurring and synthetic chemicals. His work draws on decades of experience integrating toxicological evidence, regulatory frameworks, and structure–activity data to inform science-based decision-making. His expertise adds significant value to RSI’s assessments of chemical tolerability, exposure limits, and public health protection standards.

Dr. Shintaro Hagiwara is a Risk Analyst and Statistician at Risk Sciences International (RSI), where he contributes cutting-edge statistical insight to risk assessments, particularly in chemical safety and public health. Since joining RSI’s technical team in 2018 and transitioning to a full-time role in 2023, he has applied his deep quantitative knowledge to building theoretical foundations and developing statistical software. Notably, he created the database-calibrated assessment process (DCAP) and the enhanced value-of-information (VOI) framework to aid in evidence-based regulatory decision-making, both of which have been reviewed by the Board of Scientific Counselors (BOSC). His applied statistical work provides assessments and tools to derive PODs for chemicals such as inorganic arsenic and fluoride to support both Canadian and international regulatory bodies.

Dr. Natalia (Natasha) Shilnikova is a Senior Health Risk Analyst at Risk Sciences International (RSI), where she has contributed since 2011 to some of the organization’s most analytically demanding and policy-relevant projects. With a background in medicine and a PhD in medical sciences, Dr. Shilnikova specializes in the synthesis of epidemiological evidence, human health risk assessment, toxicology, and critical literature reviews—applying her expertise across a spectrum of regulatory and public health priorities.

Dr. Nataliya Karyakina is a Senior Toxicologist and Health Risk Analyst at Risk Sciences International (RSI), where she has served since 2008. She plays a central role in RSI’s work at the intersection of chemical safety, regulatory science, and human health. Drawing on more than three decades of experience, Dr. Karyakina contributes to complex projects involving the evaluation and assessment of hazardous properties of chemicals with different modes of action, hazard-based classification of chemical substances under CLP (EC) 1272/2008, and the development of health-based safety values for industrial and environmental chemicals for both workers and the general population.

Dr. Anne Wiles joined Risk Sciences International (RSI) in 2008, where she currently serves as a Senior Analyst specializing in risk communication, perception, and governance. With a distinctive blend of expertise in language, regulation, and the use of science in decision-making, Anne has contributed to a wide range of RSI projects focused on the human and institutional dimensions of risk. Her work includes developing health risk communication strategies and drafting publicly accessible scientific information, advising on public messaging for nuclear energy and nuclear waste management, and supporting regulatory agencies in the evaluation and management of complex risk portfolios. She has been deeply involved in several RSI projects examining how mandates, institutional contexts, and public attitudes shape regulatory decision-making across federal domains. Anne has also contributed to scholarly work at RSI, including co-authoring a scoping review on the evolution of health and environmental risk decision-making, an article on the potential health risks associated with aluminum, and a book chapter on public concerns related to blood safety. In addition to her project work, Anne is a university instructor, teaching two courses: a broad overview of societal approaches to risk, and a graduate seminar on risk management in government, where she integrates academic theory with real-world regulatory case studies and risk communication practice.

Cemil ‘Jim’ Alyanak joined Risk Sciences International (RSI) in 2018 and serves as Vice-President, Communications and Strategic Initiatives. In this senior leadership role, he leads RSI’s risk communications practice, drives cross-cutting initiatives, advances strategic in-house projects, and expands the company’s international presence and partnerships. As creator of CRAFT (the Collective Risk Action Framework and Toolkit) and the Global Risk Census, Alyanak has helped establish RSI as a global innovator in stakeholder- and constituency-centered risk engagement. His expertise in perception analysis and communications strategy enables RSI to address complex challenges across public health, regulatory affairs, environmental risk, and humanitarian crisis response. From pandemic-era messaging to multistakeholder workshops and regulator support, his work consistently focuses on aligning message, audience, and outcomes that can be measured. Recognized for his ability to navigate cross-cultural contexts and indigenous knowledge systems, Alyanak has worked extensively on in-region projects with local and indigenous communities worldwide. This grassroots experience informs his current portfolio, which includes collaboration and consensus-building projects that unite stakeholders and constituencies in addressing both shared and similar risks. He also provides regional, federal, and international policy guidance to companies and governing bodies seeking to design risk-informed policies, instruments, and frameworks. Drawing on extensive emergency preparedness and disaster response experience, Alyanak now leads RSI’s Disaster and Emergency-related projects, advancing practical, risk-based solutions to complex emergencies and strengthening resilience across sectors.

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.