ScienceDirect Topics (https://www.sciencedirect.com/topics/index) provide concept definitions and subject overviews for researchers who want to expand their knowledge about scholarly and technical terms. Each synopsis provides a series of short, authoritative, excerpts from highly relevant book chapters written by subject matter experts in the field. These topic summaries are derived from Elsevier encyclopedias, reference works and books.
eLS (formerly known as the Encyclopedia of Life Sciences) (https://onlinelibrary.wiley.com/doi/book/10.1002/047001590X) is a monthly-updating reference work containing over 5,000 specially commissioned, peer-reviewed and citable articles written by leaders in the field. It offers comprehensive and authoritative coverage of the life sciences for students, lecturers and researchers alike.