Sir Timothy John Berners-Lee (1955-), a British-educated scientist known as the creator of the Internet’s World Wide Web. In 1989, while working at CERN (European Organization for Nuclear Research, the world's largest particle physics center, located near Geneva, Switzerland), Berners-Lee described an information system that would create a web of information. In 1990, he designed a suite of tools that now define our use of the Internet: the Hypertext Transfer Protocol (HTTP)—the language computers use to communicate hypertext documents; a scheme to give documents addresses on the Internet that he called a Universal Resource Identifier (URI), now known as a Uniform Resource Locator (URL); and a client program (browser) to retrieve and view hypertext documents that he called the "World Wide Web." Berners-Lee set up the first web server known as "info.cern.ch." at CERN.