City Parks Association
Non-profit organization established to protect and maintain the quality of parks and open areas.
Cobbs Creek Environmental Center
Non profit community environmental center specializing in programs for youth, stream monitoring, watershed studies and teacher training.
Friends of Fox Chase Farm
Volunteer organization dedicated to preserving this historic farm by assisting with the physical maintenance, fund raising, guided tours and other public events.
10,000 Friends of Pennsylvania
An alliance of organizations and individuals committed to promoting land use policies and actions that will enable Pennsylvania to strengthen its diverse urban, suburban, and rural communities and reduce sprawl.
Friends of Philadelphia Parks
Dedicated to preserving and developing area parks through community outreach and volunteer work.
Friends of the Pennypack Park
This park was established in 1905 to insure the protection of Pennypack Creek and the preservation of the surrounding land and historic structures.
Greensgrow Philadelphia Project
Experimental urban farm designed as a prototype that can be replicated by others interested in urban agriculture.
GreenTreks
Provides information about environmental issues through various media technologies.
Health Sciences Libraries Consortium
Non-profit organization facilitating information-sharing between its members.
Instrumentation, Systems, and Automation Society: Philadelphia Section
Includes local events, member directory, meeting and class schedules, and links to related sites.
Morris Arboretum of the University of Pennsylvania
Historic center providing research, teaching, and outreach programs to nurture the earth's forests, fields and landscapes
The Pennsylvania Horticultural Society
Non-profit organization providing gardening information and shows.
Philadelphia Area Space Alliance (PASA)
Offers short description and contact for a regional space interest group.
Philadelphia Birdline
Lists birds sighted in the area, and provides information on birdwatching opportunities.
Philadelphia Botanical Club
Scientific society presents its long history, meetings and field trips, herbarium, journal, and officers, with a membership form.
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