If you haven't gone through the section on Evaluating Your Sources, please go there now and then return to Finding Websites - Evaluating.
From our list of results we chose to evaluate the homepage of the Union of Concerned Scientists. Search results sometimes give you links to sections or documents within a Website. If you are not taken directly to the homepage, you should still review it.
Homepages can tell you a lot about the quality of the website, but you need to closely examine the specific pages or documents you are using.
If you choose to use a webpage or document linked from a homepage or website, you'll need to continue to evaluate the author's ideas and arguments.
If you've chosen a webpage or document that's useful for your presentation and evaluated it, then you'll need to cite it.
Here's an example of a web document that was linked from Union of Concerned Scientists' homepage: