GreenFILE is a free research database covering the environmental effects of individuals, corporations and governments and what can be done at each level to minimize negative impacts. It provides thousands of open access full-text records from scholarly, government and general interest sources.
History Study Center is a unique reference tool that delivers a comprehensive collection of primary and secondary source material that meets the needs of both AP and mainstream courses in Social Studies.
History Study Center consists of seven integrated resources that can be easily cross-searched through a single interface:
Study Units—500+ History Topics containing editorially selected materials
Reference Works—20,000+ articles from atlases, biographical collections, encyclopedias, and research guides, more added monthly
Picture Library—3,000+ captioned historical photos, political cartoons, woodcuts, more
Video Library—hundreds of historical video clips, captioned for context and easy searching
Web Gateway—annotated links to thousands of reliable websites, from the major primary source collections down to individual pages
KnowledgeNotes™ History Guides—text-based topic guides about trends, events, and the science of history
Journal Library—cover-to-cover full text of 80 journals