ScienceDirect This link opens in a new windowScienceDirect, a product of Elsevier Science, is one of the largest and most comprehensive scientific, technical and medical, and social science databases, providing access to over 9 million full-text journal articles from over 2,500 peer-reviewed research journal titles and 6,000 books published by Elsevier and subsidiary publishers Academic Press, Pergamon, Mosby, and Saunders.