Encyclopaedia Britannica Inc., headquartered in Chicago, Illinois, is a leading provider of learning and knowledge products. We are a global leader in educational publishing whose products can be found in many media, from the Internet to cell phones to books. Our worldwide reach includes offices and expert contributors all over the globe and products for learners of all ages. We’re proud to be one of the world’s most trusted sources of information on everything from the origins of the universe to current events. The Encyclopaedia Britannica has been published since 1768.