Walker Library now subscribes to Science Online. The online site offers full access to Science magazine content from 1997 to present. The articles are available in PDF or HTML format with linked references and even additional online supplemental data.
The features of the site also include rss feeds and downloadable PowerPoint slides of articles to use in the classroom.
If you're on campus, you can go directly to http://www.sciencemag.org to view current and past issue. If you're off campus, use this link instead, accessed from the Journal Locator. The library also subscribes to the print edition.