The 2026 Sewell Lecture, held at Columbia University, brought together experts, students, and leaders to reflect on critical issues in public health, environmental protection, and social equity. The event honored the legacy of Granville Sewell, whose contributions to environmental health sciences have left a lasting impact on the field. The lecture served as a reminder of the power of collective action in reimagining the future of public health protection.

Honoring Granville Sewell's Legacy

The Sewell Lecture, now in its 38th year, was established to celebrate Granville Sewell, a renowned educator and leader in environmental health sciences. Sewell's dedication to his students and his pioneering work in developing educational materials and programs at Columbia University advanced the field significantly. His legacy continues to inspire professionals and students to tackle pressing public health challenges with ingenuity and compassion.

Speakers at the lecture shared personal memories of Sewell, emphasizing his commitment to his students and his ability to connect with people worldwide. Sewell was remembered for his efforts to recruit international students to Columbia and his collaborations with researchers to address global health concerns. His work in Taiwan, which led to partnerships on liver cancer research, and his influential NIH-funded grants showcased his dedication to making a global impact on public health.

Reflecting on Past Challenges

A pivotal theme of this year’s lecture was the resilience and adaptability of the public health community during challenging times. Speakers recounted the hardships of recent years, emphasizing the collective efforts that allowed academic and professional communities to continue their work despite obstacles. Funding difficulties, policy hurdles, and misinformation campaigns were addressed as ongoing barriers that require innovative solutions.

The resilience of the Columbia University community in supporting students and advancing research, even in the face of terminated programs and funding cuts, was highlighted. Stories of fundraising initiatives, creative problem-solving, and the determination to keep programs alive illustrated the persistent and collaborative spirit integral to public health advancements.

Insights from Carlos Santos

The keynote speech of the 2026 Sewell Lecture was delivered by Dr. Carlos Santos, a distinguished public health practitioner and educator. Santos, whose career spans decades of impactful work, reflected on the centrality of public health as a human right. His address emphasized the role of institutions in protecting public welfare and underscored the importance of global cooperation in addressing public health crises.

Santos shared key lessons from his extensive career, which includes research into environmental risks, the health impacts of disasters like Hurricane Maria, and contributions to disaster preparedness in collaboration with the National Institute of Standards and Technology. Notably, his work on long-term care for workers and workplace risks in Mexico demonstrated his commitment to equity and justice.

Connecting Research to Real-World Impact

One highlighted achievement of Santos’s career involved groundbreaking research on health risks associated with chemical exposure. Santos shared the story of his doctoral research on a specific chemical molecule and its risks for workers, particularly in settings such as rubber production and combustion processes. His work faced significant challenges due to funding conflicts, but it ultimately led to a reclassification of the chemical’s health risks and stricter regulations.

The episode was a reminder of the importance of perseverance and ethical considerations in public health research. Santos expressed gratitude for the collaborative efforts and support from his advisors and peers, which enabled him to achieve meaningful outcomes despite industry pushback.

Looking to the Future

In closing his lecture, Santos encouraged attendees to reimagine the role of public health professionals in shaping a sustainable and equitable future. He challenged the audience to think ahead to 2029 and consider what advice they would give to future policymakers as they tackle looming health and environmental crises.

Santos emphasized the necessity of community-driven approaches and the inclusion of marginalized voices in crafting public health strategies. He highlighted the role of young professionals as future leaders who will bridge the gap between current challenges and long-term solutions.

Key Takeaways from the 2026 Sewell Lecture

• Environmental Health Priorities: Granville Sewell’s legacy reinforces the need for continued innovation in environmental health education and research.
• Community Resilience: The power of collective action during challenges is central to advancing public health.
• Global Equity & Justice: Dr. Carlos Santos emphasized the importance of equity in addressing global health risks and involving vulnerable populations in decision-making.
• Future Planning: Preparing for forthcoming public health crises requires vision, adaptability, and a commitment to shared values.

Conclusion

The 2026 Sewell Lecture left attendees with a renewed sense of purpose and inspiration to tackle the pressing issues in public health. By honoring the past, reflecting on challenges, and envisioning the future, the lecture underscored the ongoing importance of collaboration, innovation, and ethical practice in ensuring health equity worldwide.

As Dr. Santos noted, the role of public health professionals extends beyond addressing immediate crises—it involves building the foundation for a healthier and more equitable society.