PLANTS
     USDA Natural Resources Conservation Service: Plants Database
     Arbor Day Online
     Botanique (U.S. and Canadian Botanical Gardens)
     Environmental Weeds Home Page
     Harvard University Herbaria
     Illinois Natural History Survey
     International Survey of Herbicide-Resistant Weeds
     Iowa State Sustainable Agriculture Extension Service:
        Related Sites
     The Kudzu File
     Meade State Park: Floral Key: Abutilon
     Plants of the [Nature Conservacy] Tallgrass Prairie Preserve
        (Oklahoma State University)
     Scott's Botanical Links
     University of Minnesota Extension Service: Herbicide Resistant
        Weeds
     Weed Science Links 
     New York Botanical Garden: Digital Library 

    ANIMALS
     All About Birds
     AfriCam (African Wildlife)
     Conceiving a Clone
     Sea Turtle Satelite Tracking Program

    BOTH
     The Encyclopedia of Life
     Ecology WWW Page: Lists of WWW Sites of Interest to Ecologists
     Harvard Museum of Natural History
     The Complete Work of Charles Darwin Online
     NASA Astrobiology Program at Ames Institute
     Tree of Life
     Census of Marine Life
     Sandra Steingraber

   OTHER
     Mad Sci Network
     Science Friday
     Radiolab
     Chemical Elements.com   (periodic table)
     Eric's Treasure Troves of Science
     PBS Science
     Schiller Science Page
     Discover Magazine
     New Scientist (science news)
     Sci-News: Breaking Science News
     Phys.org
     Annals of Improbable Research (incl. Ig Nobel Prize)
     SciencePunk (blog)
     Modern Hippie Mag
     U. S. Geological Survey
     Interior Geospatial Emergency Management System (IGEMS)
     NOAA
     Pew Center on Global Climate Change
     Global Disaster Watch (blog)
     Wildfire Viewer
     DataRefuge
     EDGI (Environmental Data & Governance Initiative)
     The Zooinverse: Projects
     8 Impactful Citizen Science Projects

GROUPS

    SCHOLARLY
     American Institute of Biological Sciences
     Botanical Society of America
     Botanical Society of the British Isles
     Botanical Society of Scotland
     Ecological Society of America
     ESA: Ecological Archives
     Harvard University: Department of Organismic and Evolutionary
        Biology
     Royal Botanic Garden Edinburgh

    POLITICAL
     The Kerr Center for Sustainable Agriculture
     The Land Institute
     USDA Natural Resources Conservation Service
     Amazing Environmental Organization Web Directory
     Eastern Native Seed Conservancy
     Environment America
     Greenpeace
     Hudson River Sloop Clearwater
     Izaak Walton League of America
     National Audubon Society
     Natural Resources Defense Council
     Rainforest Action Network
     Seed Savers  (Australia)
     Sierra Club
     Southern Exposure Seed Exchange
     Wilderness Society
     World Wildlife Fund
     World Watch Institute
     treehugger (blog)
     Environmental News Network
     350
     International Institute of Not Doing Much: Slow Down Now
     Slow Food USA
     Food Alliance
     foodroutes.org
     LocalHarvest
     Monterey Bay Aquarium Seafood Watch
     Adbusters
     The Yes Men
     Plug in America
     Transnationale: business watch
     Co-op America: Economic Action for a Just Planet
     Sweatshop Watch
     behindthelabel.org