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.
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.
Earth Yes!: Organization offering environmental summer camps to inner city middle school youths.
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.
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
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.
Philadelphia Herpetological Society: Organization that works to conserve endangered and threatened reptiles and amphibians.
Ringing Rocks Foundation: Works to research, document, and conserve diverse global wisdom traditions and their healing practices through photography, audio and video recordings, and preservation of artifacts. Includes a list of programs, partnerships, and publications.
SWEP - Society of Women Environmental Professionals of Greater Philadelphia: A non-profit professional association of women involved or interested in environmental law, science, business, and policy. Includes information on programs and services, members' directory, committees, and links.
The Brewery Garden: Project working with Philadelphia East Falls members to convert an old lot into a community garden
The Pennsylvania Horticultural Society: Non-profit organization providing gardening information and shows.
The Schuylkill Center for Environmental Education: Provides nature programs, educational resources, and activities for adults and children.
Wagner Free Institute of Science: Education institution providing science classes for adult and school age children.
Welcome to SCRUB: Non-profit organization designed to improve the environment and quality of life through education and legal and technical assistance.