GreenPlastics:Copyrights

From Green Plastics

The license Green Plastics uses grants free access to most of the content on this site in the same sense that free software is licensed freely. This principle is known as copyleft. That is to say, Green Plastics content can be copied, modified, and redistributed so long as the new version grants the same freedoms to others and acknowledges the authors of the Green Plastics article used (a direct link back to this website satisfies our author credit requirement). There are some exceptions, where copyrighted content has been reproduced on this website with permission. In these cases, such material cannot be reproduced without getting permission from the original copyright holder.

Except where otherwise noted, the text contained on this website is copyrighted (automatically under the Berne Convention) by Green Plastics contributors and licensed to the public under the GNU Free Documentation License (GFDL). The English text of the GFDL is the only legally binding document; what follows is our interpretation of the GFDL: the rights and obligations of users and contributors.

Contributors' rights and obligations

If you contribute material to Green Plastics, you thereby license it to the public under the GFDL. In order to contribute, you must be in a position to grant this license, which means that either

• you hold the copyright to the material, for instance because you produced it yourself, or
• you acquired the material from a source that allows the licensing under GFDL, for instance because the material is in the public domain or is itself published under GFDL.

In the first case, you retain copyright to your materials. You can later republish and re-license them in any way you like. However, you can never retract the GFDL license for the copies of materials that you place here; these copies will remain under GFDL forever.

In the second case, if you incorporate external GFDL materials, as a requirement of the GFDL, you need to acknowledge the authorship and provide a link back to the network location of the original copy. One of the easiest ways to do this is to include the GFDL Template at the bottom of the page, with the name and the URL of the original source.

Please remember that all works are copyrighted unless either they fall into the public domain or their copyright is explicitly disclaimed. If you use part of a copyrighted work under "fair use", or if you obtain special permission to use a copyrighted work from the copyright holder under the terms of our license, you must make a note of that fact (along with names and dates) in the place where the material is used. You do not need to obtain permission to cite facts or for short quotations, but you should always cite the original source in a references section at the end of the article.

If you suspect a copyright infringement, you should let us know immediately. If at all possible, include a link or a reference to the source that you believe the material was copies from.

Reusers' rights and obligations

If you want to use Green Plastics materials in your research paper, article, book, website, or other publications, you can do so, but you have to follow the GFDL. If you are quoting or copying an article from this site on an internet document, you can generally fulfill this obligation by providing a link back to this website and crediting Green Plastics.

However, please note that we strongly discourage you from citing any Green Plastics article as an authoritative primary source for factual information in your research paper, presentation, news article, or other publication. If you are doing research on environmentally-friendly plastics, please take the time to look up information in the references provided here, and cite those as your original sources.

If you are the owner of content being used without your permission

If you are the owner of content that is being used on Green Plastics without your permission, then you may request the page be immediately removed (see the Contact Page for contact information). If you do contact us with such a claim, please provide some evidence to support your claim of ownership.

Exceptions (copyrighted material reproduced with permission)

The image on the Cover Page has been adapted from the cover art of the Green Plastics book, which is copyrighted by Princeton University Press and has been reproduced with permission.

The following articles contain some text that has been excerpted or derived from content in the Green Plastics book, and has been reproduced here with permission from E.S. Stevens and Princeton University Press:

• The Introduction and overview page
• The green plastics article
• The plastics article

This content should not be reproduced, except in small parts under "fair use", without expressed permission from both E.S. Stevens and Princeton University Press.