The Science Reference Center is a new database among several that Princeton is now offering, thanks to the State of New Jersey. It is perhaps in a league with AccessScience, the online version of the McGraw-Hill Encyclopedia of Science and Technology, but it offers reviews and articles from key, authoritative journals, and there are sections aimed at a much younger audience.
From EBSCO’s description: Science Reference Center is a comprehensive research database that provides easy access to a multitude of full text science-oriented content. Designed to meet every student’s science research needs, Science Reference Center contains full text for nearly 640 science encyclopedias, reference books, periodicals, etc. Topics covered include: biology, chemistry, earth & space science, environmental science, health & medicine, history of science, life science, physics, science & society, science as inquiry, scientists, technology and wildlife. Science Reference Center also satisfies the demand for standards-based content by providing teachers and librarians with articles correlated to state and national curriculum standards.