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Most Comprehensive Reference Resource since 1768.
Combines today’s current topics with over 235 years of expertise and delivers more depth, breadth and information than other encyclopedias. Over 120,000 articles, an updated world atlas, thousands of images and videos, an online dictionary and thesaurus, over 300,000 articles from respected magazines and journals, news headlines, a guide to the Web's best sites and much more.
Trustworthy Results.
- Cited in U.S. Supreme Court cases.
- Expert contributors: More than 90 have won Nobel prizes. Most are authors, university professors, commentators, museum curators, scientists, and other experts chosen for their field expertise.
- Trusted by over 7 million students at top colleges and universities worldwide.
Spend Less Time Searching and More Time Finding.
Stop skipping between search results! Britannica organizes relevant results from a single, reliable source.
Help for Students.
Articles and media developed especially for students, with research tools to help with citations and bibliographies.
The Answers You Need, the Topics You Care About.
Learn more about the history of Iraq. Understand the U.S. electoral college. Watch a video about nutrition and health. Find accurate results on virtually any topic.
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