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Although there are other definitions, for the purpose of categorization here, we will be using the definition that refers to the natural environment or ecology, including the air, water, minerals, organisms, and other external factors that may surround and affect an organism at any time and, in particular, the areas and components that are strongly affected by humans.

Questions of the environment are social, political, and scientific, and we will be taking no positions here. Directories whose focus is on the natural environment may be appropriately listed here, regardless of positions. For example, a directory of web resources dealing with ways in which to fight man-made climate change would be appropriate for this category, but so would a directory of resources denying the theories of man-made climate change.

  • Dot Environment

    Dot Environment

    Environment Directory

    Hits 707

    The directory focuses on resources related to the environment, such as ecosystems, waste management, pollution, weather, land conservation, wildlife, vegetarianism, and related topics, separated into environment and business categories and subcategories. There are three options for site submissions, one involving a reciprocal link, the others based on the payment of an annual fee.
  • ENDS Directory

    ENDS Directory

    The complete guide to environmental solutions providers

    Hits 766

    Maintained by Environmental Data Services, ENDS Directory is a listing of UK environmental consultants and other environmental solutions providers, including contractors, legal services, laboratory services, equipment supplies, and others.
  • Go Green Web Directory

    Go Green Web Directory

    actions green louder than words

    Hits 711

    Established in 2008, the directory focuses on listing sites that offer eco-friendly resources, including green products, services, and vendors in Massachusetts. The site also features a calendar of events, green living resources, and a blog.
  • Green Gamma

    Green Gamma

    Think Green. Search Green.

    Hits 1501

    Established in 2007, Green Gamma is a search engine and directory of green services, products and information. Owned and operated by Stonegate Associates, there is no charge for the submission of a site.
  • Green List

    Green List

    Eco Friendly Sites

    Hits 734

    Powered by a PHP Link Directory script, the Green List is an ecological directory for green resources, including sites whose topics relate to environmental issues, as well as green-friendly businesses and organizations. Non-green featured sites may be listed, but at a cost of $170 per year. Otherwise, the directory's submission fees are $40 for a green featured link or $20 for a green regular link, both one-time payments.
  • Green Pages

    Green Pages

    Global Directory for Environmental Technology

    Hits 560

    Online since at least December 23, 1996, when it first appears in the Internet Archive, Green Pages is a guide to environmental products and services, publications, organizations, and events. Apart from its directory, it includes editorials, event listings, news, and other resources. There is no charge for a listing in Green Pages, and listings may include organizational addresses and contacts.
  • My Green Directory

    My Green Directory

    sustain your world

    Hits 620

    My Green Directory began in the middle of 2011, although it is a continuation of an earlier eco directory that began in 2006. With a focus on on linking to businesses that use environmentally friendly policies, the directory’s goal is to link companies that are making a difference, and producing sustainable brands.
  • National Green Pages

    National Green Pages

    Growing the Green Economy for People and the Planet

    Hits 1396

    Powered by eDirectory, and maintained by Green America, a not-for-profit membership organization that offers Green Business Certification to businesses that meet its standards of environmental consciousness, the National Green Pages features sustainably responsible businesses and organizations, organized by listings and by products.
  • Nature's List

    Nature’s List

    Environmental Directory

    Hits 1317

    Online since 2006, Nature's List is a topical directory focused on listing environmental resources, both regional and internationally, its content arranged into several upper-level categories, including Agriculture, Animals, Arts, Business, Education, Employment, Health, Land and Wildlife, Media, Organizations, Science, and Products & Services.
  • One Green Earth

    One Green Earth

    Green Business Directory

    Hits 712

    In operation since 2006, the directory offers green, or ecological friendly, businesses a profile page and a link to their site, without payment. In order to determine eligibility, the directory's submission form asks a series of yes-or-no questions.