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Breaking news on weather, sports, world, science, financial, technology, travel, national, economy, and entertainment news provided by USATODAY.com. USATODAY.com provides video, sudoku, RSS feeds, crossword puzzles, audio, photo galleries, and email....

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.

World Nuclear Association: we provide information on nuclear power, nuclear energy, sustainable development, mitigating climate change, uranium, nuclear power plants, radiation, nuclear safety and nuclear waste disposal.

Find breaking news, multimedia, reviews & opinion on Washington, business, sports, movies, travel, books, jobs, education, real estate, cars & more.

Reporting our world daily: original nature and science coverage from National Geographic.

The ASME vision for mechanical engineering is to be the premier organization for promoting the art, science and practice throughout the world.

Official Web Site of the IAEA

Get in-depth coverage of current and future trends in technology, and how they are shaping business, entertainment, communications, science, politics, and culture at Wired.com.

Hindawi is a rapidly growing academic publisher with more than 200 Open Access journals covering a wide range of academic disciplines.

Popular articles, stories & photos from the Los Angeles Times news archives, including an extensive archive and timeline that can be browsed by date, keyword and writer.

IDEAS is a central index of economics and finance research, including working papers, articles and software code