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Explore HISTORY shows, watch videos and full episodes, play games and access articles on historical topics at History.com.

Explore the updated online encyclopedia from Encyclopaedia Britannica with hundreds of thousands of articles, biographies, videos, images, and web sites.

Prezi is the zooming presentation editor

Visit NBCNEWS.com for breaking news, original journalism and videos. Stay current with the latest world news, business headlines, health, sports & entertainment.

Beautiful Trouble is a book and web toolbox that puts the accumulated wisdom of decades of creative protest into the hands of the next generation of change-makers.

Twitter is without a doubt the best way to share and discover what is happening right now.

Facebook is a social utility that connects people with friends and others who work, study and live around them. People use Facebook to keep up with friends, upload an unlimited number of photos, post links and videos, and learn more about the people ...

A complete reading program with affordable books, lesson plans, worksheets and assessments to teach leveled reading, phonics, phonemic awareness, alphabet, vocabulary, and comprehension to K-5.

A news and analysis blog covering nonviolent movements around the world.

YouTube is a place to discover, watch, upload and share videos.

Yale University comprises three major academic components: Yale College (the undergraduate program), the Graduate School of Arts and Sciences, and the professional schools.