Choosing appropriate resources for research projects can be tricky. General encyclopedias are rarely sufficiently detailed to support a research project, although a major encyclopedia like the Encyclopaedia Britannica will provide a scholarly treatment of a subject with a list of references for further research. A general rule of thumb is to consult general encyclopedias, handbooks, and subject encyclopedias only for a basic understanding of a subject and for suggestions for further research. In depth research is best found in books and current periodicals.
News magazines and popular publications like Newsweek, Time, Life, ...