Our Team

Sam Myers
PHA Director

Sam Myers works at the intersection of human health and global environmental change. He is a Senior Research Scientist at the Harvard T.H. Chan School of Public Health, Director of the Planetary Health Alliance, an Instructor of Medicine at Harvard Medical School, and is Board Certified in Internal Medicine.

Chris Golden
PHA Associate Director

Dr. Golden’s research investigates the nexus of trends in global environmental change and human health. Since 1999, Dr. Golden has been conducting environmental and public health research in Madagascar where he created a local research organization called MAHERY (Madagascar Health and Environmental Research).

Amalia Almada
Senior Program Manager

Amalia Aruda Almada is the Senior Program Manager of the Planetary Health Alliance, overseeing the strategic visioning, external relations, and program operations for PHA. She received a Ph.D. in Biological Oceanography from the MIT/Woods Hole Oceanographic Joint Program and a B.S. in Biology from Georgetown University.

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Erika Veidis 
Member Engagement & Outreach Coordinator

Erika Veidis serves as the Member Engagement and Outreach Manager of the Planetary Health Alliance, working to grow the planetary health community of practice, coordinate global educational efforts, develop global student initiatives, and build public education and outreach-focused projects.

Perri Sheinbaum
Program Coordinator

Perri Sheinbaum is the Program Coordinator of the Planetary Health Alliance. She graduated from Oberlin College in 2016 with a double major in Biology and Environmental Studies, where she was involved in projects and research in the fields of global health, behavioral ecology, and environmental health.



Richard S. Ostfeld

Richard Ostfeld is Senior Scientist at the Cary Institute of Ecosystem Studies, a not-for-profit research institution in Millbrook, New York, dedicated to providing the science behind environmental solutions. His research focuses on ecological determinants of human risk of exposure to infectious diseases, emphasizing Lyme and other tick-borne diseases.

Ruth DeFries

Ruth DeFries is a professor of ecology and sustainable development at Columbia University in New York. She uses images from satellites and field surveys to examine how the world’s demands for food and other resources are changing land use throughout the tropics. Her research quantifies how these land use changes affect climate, biodiversity and other ecosystem services, as well as human development.

Stephen Luby

Stephen Luby earned his MD degree from the University of Texas-Southwestern Medical School at Dallas. His previous positions include directing the Centre for Communicable Diseases at the International Centre for Diarrhoeal Diseases Research, Bangladesh in Dhaka, Bangladesh, conducting research and teaching epidemiology at the Aga Khan University in Karachi, Pakistan, and working as an epidemiologist in the Foodborne and Diarrheal Diseases Branch of the U.S. Centers for Disease Control and Prevention.

Courtney Howard 

Courtney Howard is a University of British Columbia and McGill-trained Emergency Physician who practices in Canada’s subarctic and is the Vice President of the Canadian Association of Physicians for the Environment (CAPE). Motivated by work on a Médecins Sans Frontières pediatric malnutrition project in Djibouti, and by climate-related health impacts on her Northern patient population, she led the successful campaign to have the Canadian Medical Association divest from fossil fuels and for MD-Financial to create a Fossil-Free Fund for individual physician investment.



Anthony Capon

Professor Anthony Capon directs the global health institute at United Nations University. A public health physician and authority on environmental health, his research focuses on urbanization, sustainable development, and population health. Tony has more than two decades of senior leadership and management experience in public health policy, research, and education. 

Alex Ezeh

Alex Ezeh is the Executive Director of the African Population and Health Research Center (APHRC). Professor Ezeh has guided APHRC to become one of Africa’s foremost regional research center addressing population, health and education issues.

Jonathan Patz

Jonathan Patz is a Professor & the John P. Holton Chair in Health and the Environment at the University of Wisconsin–Madison, where he also serves as Director of the university’s Global Health Institute.  He focuses on the health risks of global climate and ecological change, as well as societal benefits from a decarbonized economy.