Hydra's PA Environmental Stuff
User friendly information on various environmental topics. Focus on Pennsylvania, but not area limited.
John Heinz National Wildlife Refuge at Tinicum
Preserves Pennsylvania's largest freshwater tidal marsh.
Knossus Project
Pennsylvania-based research and development firm exploring the integration of technology, nature and humanity into everyday existence. Includes brief introduction and contacts.
Merrill W. Linn Land & Waterways Conservancy
Seeks to protect and preserve ecological sites in Central Pennsylvania. Find photos, description of services and contact details.
Pennsylvania Council of Professional Geologists
Serve the professional and commercial interests of member firms that provide or utilize geological services.
Pennsylvania Department of Conservation and Natural Resources
Profiles state environmental resources, policies, and programs.
Pennsylvania Forestry Association
A broad-based citizens conservation group providing sound forest management advice and promoting wise stewardship of forest resources. Organization news and information.
Sustainable Energy Fund of Central Eastern Pennsylvania
Invests in clean energy, renewable energy, and energy conservation. Provides information about the fund's investment policies, projects, and programs.