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Read biographies, play games, watch interviews and video clips at Biography.com. Check out our Born On This Day, Deathiversary, and Black History sections. Visit The Biography Channel for great TV shows like BIOGRAPHY, Notorious, I Survived..., and ...

Latest news and features on science issues that matter including earth, environment, and space. Get your science news from the most trusted source!

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

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

HowStuffWorks Science has explanations and colorful illustrations related to earth science, life science, and other wonders of the physical world.

Watch full episodes of your favorite PBS shows, explore music and the arts, find in-depth news analysis, and more. Home to Antiques Roadshow, Frontline, NOVA, PBS Newshour, Masterpiece and many others.

Space.com provides information on everything Space - satellites, stars, astronomy, the Sun, planets, NASA and more.

CNET is the premier destination for tech product reviews, news, price comparisons, free software downloads, daily videos, and podcasts.

TED is a small nonprofit devoted to Ideas Worth Spreading -- through TED.com, our annual conferences, the annual TED Prize and local TEDx events.

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 ...