Encyclopedia Britannica is the world’s most comprehensive reference product, a distinction it has held since its first publication in 1768.
Containing nearly 51,000 entries (marshalling six and one-half million words on a vast range of topics), and with more than 80,000 hypertext cross-references, the current Sixth Edition is among the most complete and up-to-date encyclopedias ever produced.
The Internet’s premiere free encyclopedia, provides users with more than 57,000 frequently updated articles from the Columbia Encyclopedia, Sixth Edition. Each article is enhanced with links to newspaper and magazine articles as well as pictures and maps – all provided by HighBeam Research.
Similar to Grolier Online, True Flix is an innovative online interface that uses books, videos, and the web to inform students on various topics previously covered in Scholastic’s award winning True Book series.
Welcome to Wikipedia! We are building an open-content encyclopedia in many languages. In the English version, started in January 2001, we are now working on 278347 articles. Learn how to edit pages, experiment in the sandbox, and visit our Community Portal to find out how you can participate in the development of Wikipedia.