Open Access (free with no login) quality Science Journals
How to use ScienceDirect
Enter search terms into search box. Look for green dot Open access next to article to download free full-text articles as PDFs
Using Google Scholar
How to use PubMed.gov
Enter search terms into search box. Then click on Free full text box in left navigation to only see free full-text articles/PDFs.
Evaluating Journal Articles
How to use Elsevier
Enter search terms into search box and hit Enter. Then click on Only Open Access button in left navigation to only see free full-text articles/PDFs.
Science terminology and definitions
This website provides definitions and subject overviews of scientific concepts. The overviews are taken from Elsevier encyclopedias, reference works and books, and are written by subject experts working in the field.