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  1. Wikipedia | Definition, History, & Facts | Britannica › topic › Wikipedia

    May 19, 2021 · Wikipedia, free Internet-based encyclopedia, started in 2001, that operates under an open-source management style. It is overseen by the nonprofit Wikimedia Foundation and is one of the most-visited sites on the Internet. It uses a collaborative software known as wiki for editing articles.

  2. So far there have been five notable mass extinctions on Earth. A growing number of scientists argue that we’re now in the midst of a sixth. Postcards from the 6th Mass Extinction is a podcast hosted by John P. Rafferty that attempts to personalize extinction, emphasizing the survival challenges that familiar forms of life currently face, while at the same time considering the pivotal roles ...

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  4. Britannica Kids

    Britannica’s new platform provides content designed and written specifically for early learners. Creating a more engaging and fun learning experience for students, the activities in Britannica Fundamentals align with the content areas children learn in the classroom.

  5. Britannica Online | Britannica › topic › Britannica-Online

    In encyclopaedia: Online encyclopaedias. In 1994 Britannica Online was released for subscription over the Internet. In addition to the full text database and thousands of illustrations, Britannica Online served as a gateway to the World Wide Web by providing direct links to outside sources of information.

  6. Biographies browse | Britannica › biographies

    Elizabeth Warren, American legal scholar and politician... Kurt Warner. American football player. Kurt Warner, American professional gridiron football... Fred Astaire. American dancer and singer. Fred Astaire, American dancer onstage and in motion... Kris Kristofferson. American singer, songwriter, and actor.

  7. e-book | Definition, History, & Facts | Britannica › technology › e-book

    E-book, digital file containing a body of text and images suitable for distributing electronically and displaying on-screen in a manner similar to a printed book. E-books can be read on various devices, including e-readers. Learn more about e-books, including their history.

  8. Microsoft Windows | History, Versions, & Facts | Britannica › technology › Windows-OS

    Microsoft Windows, computer operating system (OS) developed by Microsoft Corporation to run personal computers (PCs). Featuring the first graphical user interface for IBM-compatible PCs, Microsoft Windows soon dominated the PC market. Learn more about the operating system, including its various versions.

  9. virus | Definition, Structure, & Facts | Britannica › science › virus

    Virus, infectious agent of small size and simple composition that can multiply only in living cells of animals, plants, or bacteria. Viruses possess unique infective properties and thus often cause disease in host organisms. Learn about the history, types, and features of viruses.

  10. Adolf Hitler | Biography, Rise to Power, & Facts | Britannica › biography › Adolf-Hitler

    Adolf Hitler, leader of the Nazi Party (from 1920/21) and chancellor and Fuhrer of Germany (1933–45). He was the leader of Germany during that country’s participation in World War II, and he oversaw the Nazi Party’s implementation of the Holocaust, which resulted in the deaths of millions of people.

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