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

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Chemical Safety Board is an independent agency, headquartered in Washington D.C. charged with investigating chemical accidents to protect workers, the public and the environment by making recommendations and reviewing the effectiveness of regulations...

Free High Definition Video - Video Backgrounds - Video Loops - Motion Backgrounds with Instant downloads.

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

Internet Archive is a non-profit digital library offering free universal access to books, movies & music, as well as 150 billion archived web pages.

Chandra X-ray Observatory Center, Gateway to the Universe of X-ray Astronomy

Vimeo is a respectful community of creative people who are passionate about sharing the videos they make. We provide the best tools and highest quality video in the universe.

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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.