Robert Lundgren has a Bachelor of Plant Science and Fine Arts minor from the University of Delaware, and a Master of Landscape Architecture from the University of Pennsylvania. He worked at landscape architecture firms, Olin and Andropogon and is now at Penn working as the University Landscape Architect within the Facilities & Real Estate Services Division, shepherding a variety of landscape projects on the 300-acre campus arboretum. He is an artist, an award-winning designer and an avid naturalist. His responsibilities at Penn include research, campus planning, tree care and management, garden design, ecological and environmental initiatives and maintenance protocols.

Seth Lieberman

Seth Lieberman co-founded Quiet Clean Philly; an all-volunteer organization dedicated to phasing out gas leaf blowers in the City of Philadelphia. Seth’s activism and articles on the harms of gas leaf blowers have been featured in the Philadelphia Inquirer, WHYY’s Studio 2 and Radio Times, Channel 6 ABC Action News, The Chestnut Hill Local, The Weavers Way Shuttle, Planet Philadelphia, and The Jewish Exponent. Seth is also active as part of a national network of municipalities seeking healthier and more sustainable communities through changing how we think about lawncare. When not volunteering, Seth runs Leadership Breakthroughs, a leadership and strategy development business focused on academic medical centers.
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Dr. Bonnie Sager

Dr. Bonnie Sager is a Consulting Clinical Physician to the New York State hospital system. She has lectured internationally on eyecare and has served as Vice President and advisor to several Visioncare companies. As a clinician, she is concerned with the many detrimental health impacts that gas powered lawn equipment have on landscape workers and the general public. She is actively working with communities, medical professionals, environmental groups, and legislators to change policy and promote more sustainable landscaping practices. Dr. Sager and Dr. Lucy Weinstein are co-founders of Huntington CALM, (Clean Alternative Landscaping Methods) a Long Island-based citizens’ advocacy organization. She is also a co-founder of QCA (Quiet Clean Alliance) a national organization dedicated to educating and changing public policy on gas lawn equipment. Dr. Sager served on the advisory board of Noise Free America and has been featured in print, on television and radio addressing the topic Landscaping and Your Health.

Ari Miller, RLA, ISA Certified Arborist - Ari Miller is the director of design at Hinge Collective in Philadelphia, Pennsylvania, a public interest design firm that puts community engagement and public participation at the forefront of their practice. As both a landscape architect and arborist, Ari has always advocated for the integration and restoration of natural systems in urban design. Over the course of his 17-year career, Ari has worked as an arborist at Morris Arboretum, as a green roof design specialist at Roofmeadow, and has also led large-scale civic design projects at OLIN Partners. At Hinge, he uses this experience to help communities find design solutions that best support human and ecological health in their own neighborhoods through the enhancement of public space and community-led planning. Some notable projects include the Philly Tree Plan, Resilient Communities Stormwater Initiative, Unity Park, and Frankford Pause Park. Ari has also been adjunct faculty at the Weitzman School of Design at the University of Pennsylvania and Jefferson University.