Dr. Anna Paltseva, is a distinguished urban soil scientist and educator, currently serving as a professor in the Department of Agronomy at Purdue University. She earned her Ph.D. in Earth and Environmental Sciences from the CUNY (The City University of New York) Graduate Center. Dr. Paltseva’s research focuses on urban soil contamination, particularly heavy metal pollution, and its impact on urban agriculture, ecosystem health, and public well-being. Utilizing advanced technologies, such as portable X-ray Fluorescence (pXRF), she works on innovative soil remediation strategies in urban environments. Beyond her academic work, Dr. Paltseva is a prolific speaker, author of multiple peer-reviewed papers, and the founder of House of Soil, an initiative that connects soil science with regenerative fashion. She is also deeply involved in outreach and community engagement, promoting environmental education and sustainable land practices. As the author of the Urban Soil Guide, Dr. Paltseva provides practical advice for soil testing and management in urban settings.

Carlos Alvarez has been a part of the PowerCorpsPHL (Power Corps Philadelphia) team since March 2015 when he started as a crew leader supporting a group of young people completing various environmental sustainability projects in the City of Philadelphia. Since then, he has held many roles mainly focusing on developing the programs technical skills training. He enjoys working with program members onsite and taking advantage of every learning opportunity that presents itself during the various projects they are assigned. 

Currently, Carlos is the Director of Social Enterprise Operations overseeing the installment and operation of the Philadelphia Reforestation Hub-Urban Wood Sawmill, a private and non-profit partnership with PPR (Philadelphia Parks and Recreation)  and Cambium Carbon designed to support the city’s goal to lower wood waste, improve its tree canopy cover, and meet their workforce development goals. The Reforestation Hub provides advanced training for PowerCorpsPHL members in Sawmill Operation and related fields in tree care. Carlos is working towards becoming a certified arborist and remaining an active member of the arboriculture community. 

Dan Lambe has committed nearly two decades of work to help solve some of the biggest issues facing people and the planet through trees. After being named CEO in 2022 after 19 years in leadership roles at the Arbor Day Foundation, Lambe launched an initiative to accelerate the nonprofit’s impact by planting 500 million trees with a focus on forests and neighborhoods with the greatest need. The ambitious goal, set to replicate the number of trees planted in the Foundation’s first 50 years in only five years, has helped spur remarkable growth within the organization and expanded the Foundation’s global reach. Lambe’s leadership is rooted in three guiding principles, including supporting a quality team, bringing an increased focus to planting trees, and instilling a belief that the Foundation’s work can make a lasting difference.

Lambe is a trusted thought leader in the sustainable forestry space, and he regularly speaks at conferences hosted by the United Nations, Sustainable Brands, the U.S. Chamber of Commerce and other high-profile industry events where trees and climate intersect. Lambe is also frequently used as a resource for top news outlets and has been featured on The Weather Channel, CNN, The Washington Post, Associated Press, TIME, Forbes, Inc. Magazine, and NPR. Lambe is the author of the book Now is the Time For Trees and even helped set a Guinness World Record for the most people watering plants simultaneously.

Matthew Aghai is a climate tech executive with 20 years of professional experience spanning public, private, and academic ventures in reforestation and natural resource management across the globe. 

He currently serves the teams at Mast Reforestation and its subsidiaries, but also enjoys a variety of extracurricular functions including advising and speaking on environmental and sustainability topics, nature based and technological solutions for greenhouse gases (GHG) mitigation, and opportunities to develop durable economic pathways for stewards and skilled workers in the fight against climate change.

Jessica Turner-Skoff is Longwood Garden's first Associate Director of Science Communications. She champions Longwood’s leadership in plant science and interprets Longwood’s scientific resources for multiple communication channels and audiences. Jessica is an internationally recognized, award-winning science communicator who is professionally trained as a conservation biologist. She came to Longwood after making significant contributions in science communications at The Morton Arboretum, serving as a Botany in Action Fellow for three years at Phipps Conservatory, and teaching science communication at collegiate and professional levels.

Jessica holds a Ph.D. in Biology from West Virginia University, an MS in Conservation Science and Sustainable Development from the University of Maryland, College Park, and a BS from Muskingum University. She is an Editorial Advisor for the Journal Plants, People, Planet. She was the 2020 Emerging Horticulture Professional from the American Horticultural Society, as well as a Chanticleer Scholar in 2022.

Annaliese Bischoff is a Western Massachusetts artist and landscape architect. For the past decade, she has been collecting drawings and etchings of trees by Frank A. Waugh, founder of the Landscape Gardening Program at what is today the University of Massachusetts Department of Landscape Architecture and Regional Planning.

Annaliese received a bachelor’s degree in art from Brown University and a master’s degree in landscape architecture from the State University of New York College of Environmental Science and Forestry. She began her academic career at Kansas State University, where Waugh had studied a century earlier. She taught for forty years at the University of Massachusetts department that Waugh founded. 

Marshall Green is a fourth-generation owner and the dedicated nursery manager at Primex Garden Center in Glenside, Pennsylvania. After growing up around Primex, Marshall attended New England Culinary Institute and pursued a career as a chef in Philadelphia. In 2014 Marshall came home to Primex where he settled in as the woody plants buyer and nursery manager. As the woody plants buyer, Marshall is well attuned to current plant trends and is always looking for the next ‘it’ plant. You can easily spot him in the nursery, typically donning a wide-brimmed straw hat, eager to help and share his extensive knowledge.

Patricia Gallagher

Patricia Gallagher is Professor Emerita of Civil, Architectural, and Environmental Engineering at Drexel University. She earned bachelor’s degrees in civil engineering and geological sciences from Rutgers University, a master’s in civil engineering from Ohio State University and a Ph.D. in civil engineering from Virginia Tech. Her research expertise centers on geotechnical and geoenvironmental engineering and sustainability. 

At Drexel, Trish taught courses in civil and environmental engineering, geology, and sustainability.  Her course in sustainability, titled “Incorporating Sustainability Principles in Design” was inspired by her desire to teach design from a holistic, regenerative perspective that restores ecological balance and health in communities and ecosystems. The course explores how the concept of sustainability is fundamental to the planning, design, construction, operation, and renewal of resilient and sustainable infrastructure.

Trish believes we need to work in our own communities to restore functional ecosystems in urban and suburban areas. She began volunteering with the Abington Township Shade Tree Commission (STC) in 2019, became an acting commissioner in 2021 and was officially appointed to the STC in 2022. Currently, she co-chairs the STC. Trish is happiest in nature and spends her free time hiking and backpacking around the globe.

John Kennedy

Since 2011 John Kennedy has been volunteering with the Abington Township Shade Tree Commission (STC) as an appointed commissioner and currently serves as co-chair. He has been an active Pennsylvania Horticultural Society Tree Tender since 2008. 

John regularly takes on a leadership role in formulating and delivering STC programs.  His volunteer emphasis has been with park and public space tree planting with the Tree Vitalize - PHS Tree Tenders bare root tree program.  Leading community volunteers to plant over 300 trees in parks and other public spaces in Abington Township. 

John’s commitment to the treescapes around us has inspired him to educate others of the importance of trees in our environment. Conducting hands-on training through demonstration and coaching on how to plant, prune and care for trees.

While employed fulltime in the food service profession John returned to school in 2006 as a part-time student to study horticulture and in 2015 completed his degree at Temple University’s School of Environmental Design in Ambler, Pennsylvania.  He also holds a Certificate in Horticultural Therapy.  

Professional Background

John’s profession for over 30 years has been overseeing dining programs in premier Continuing Care Retirement Communities (CCRCs) and, as Senior Director of Dining Services, currently leads the dining program at Foulkeways in Gwynedd, Pennsylvania.  John leads a staff of dedicated culinary and service professionals serving over 900 meals daily in fine dining, retail, catering and health care settings to the residents and their guests, visitors and staff.   

Combining his expertise for high quality dining programs and his study of horticulture inspired him to make meaningful garden to dining connections with the residents he serves. Implementing in-facility greenhouse growing, culinary herb and vegetable gardens, beehives and memory gardens to provide culinary variety and unique and meaningful activities for residents while involving them in the shaping of the culinary palette of the community.

While at the Evergreens, a premier CCRC in Moorestown, NJ, he helped to re-establish this community’s resident gardens and greenhouse programs. Partnered with a local beekeeper to establish hives on site for honey production and initiated a culinary herb garden, both for use by the Evergreens chefs. 

Khomchalat THONGTING, Founder of Wongphai Co., LtdKhomchalat

Thongting (Kom) is a visionary entrepreneur hailing from a working-class background, who has dedicated 29 years to building a thriving computer and IT consulting business with a team of 45 professionals. With a passion for sustainability and a drive for global impact, Kom has expanded his horizons by delving into the bamboo industry, cultivating 95 acres of bamboo and intercrops while conducting valuable seminars and workshops for local communities. KOM’s recognized expertise includes International Biochar Initiative (IBI) and carbon management skills, making him a true leader in both business and environmental stewardship. He is the founder of the Wongphai Company, Limited.

Saranrat TANTHIPTHAM, Co-Founder of Wongphai Co., Ltd.Saranrat

Tanthiptham (Nui) is a versatile entrepreneur with a profound commitment to sustainability. Nui started her journey by excelling academically, graduating in Business Administration and Marketing from Bangkok University. Climbing the corporate ladder, she achieved remarkable success at Aderans. Later, she co-founded a thriving computer hardware venture, serving prestigious clients like universities and embassies. Her recent endeavors reflect her dedication to sustainability, including the founding of Wongphai Company, Limited, focused on eco-friendly initiatives and Environmental, Social, and Governance (ESG) principles for sustainable income generation. Nui’s expertise is well-recognized through certifications like the IBI (International Biochar Institute), C-sink Manager, and Measuring Sustainable Development.