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Our People


Executive Director
Tonyehn Verkitus

Medical and
Environmental Health Writer
Laura Dagley

Environment & Health
Education Director
Linnea Bond

Climate Action
Campaign Coordinator
Daniel Farmer

Environmental Chemist
Certified Optical Gas Imaging Thermographer
Christina DiGiulio

Youth Leadership Mentor
Corey Davis

Briana Nicholas

 Grants Project Manager
Amanda Ankner

 Communications Director
Kate Krauss

Board of Directors

Edward Ketyer, MD, FAAP
Alana Dann
James Baier, MD MPH

Staff Psychiatrist

 Department of Veterans Affairs

Julie Becker, MA, Ph.D., MPH
Katherine Crowe, Ph.D.

Licensed Clinical Psychologist/Co-Owner

Home for Anxiety, Repetitive Behaviors, OCD, and Related Disorders (HARBOR)

Francine Frezghi, MSN, RN

Post-Anesthesia Care Nurse

Temple University Hospital


Robert Little, MD

Family Physician (Retired)

UPMC Pinnacle, Harrisburg

David Masur

Executive Director

Penn Environment


Susan Robbins, MD, MPH, FAAP

Pediatrician, Child Care Health Consultant;

Co-chair, Gun Violence Prevention Workgroup

American Public Health Association/MCH

Pouné Saberi, MD, MPH

Assistant Professor, University of Pennsylvania

 Isha Thapar

University of Pennsylvania Perelman School of Medicine


Walter Tsou, MD, MPH

CPHI Adjunct Fellow;

Adjunct Professor

Department of Family Medicine & Community Health

University of Pennsylvania Perelman School of Medicine

Advisory Council

Tyra C. Bryant-Stephens, MD


Joel Chinitz, MD, MPH

Claudia Crane, RN


Peter DeCarlo, PhD


Robert Garfield, MD

Kenneth Lande, PhD

Richard Lippin, MD


Ruth McDermott-Levy, PhD, MPH, RN


David Moscatello, PhD


Kathleen Reeves, MD


George Spaeth, MD


Andrew Stone, MD


Daniel Taylor, DO


David Trevaskis, Esq.


Daniel Wolk, MD  


Richard Tolin, MD


“TO BE HOPEFUL in bad times is not just foolishly romantic. It is based on the fact that human history is a history not only of cruelty, but also of compassion, sacrifice, courage, kindness. What we choose to emphasize in this complex history will determine our lives. If we see only the worst, it destroys our capacity to do something. If we remember those times and places—and there are so many—where people have behaved magnificently, this gives us the energy to act, and at least the possibility of sending this spinning top of a world in a different direction. And if we do act, in however small a way, we don’t have to wait for some grand utopian future. The future is an infinite succession of presents, and to live now as we think human beings should live, in defiance of all that is bad around us, is itself a marvelous victory.”

— Howard Zinn, Historian, Author, Playwright, Professor, & Activist

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