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    Investigating Bombs with Robots and Shrapnel

    May 31, 2013 07:29 PM EDT

    EmbedVideo(6586, 482, 304); For Tuesday's NewsHour, Science correspondent Miles O'Brien visited the barren desert canyons of New Mexico, where investigators study explosives... by building and exploding bombs. While there, they assembled a pressure-cooker bomb -- the kind used in the Boston Marathon bombing. Shrapnel, like the nails ...

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    Sources: Obama to Name Ex-Bush Aide to Head FBI

    May 30, 2013 03:07 PM EDT

    ... Fox News reporter. And there have been questions raised about whether the FBI properly responded to warnings from Russian authorities about a suspect in the Boston Marathon bombings. The agency, meanwhile, is conducting a highly anticipated investigation into the Internal Revenue Service over its handling of conservative groups seeking tax ...

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    Republicans in Congress, President Look to Send Aid to Oklahoma

    May 22, 2013 01:21 PM EDT

    ... Steve King, R.-Iowa, and Rep. Bill Keating, D.-Mass., are among the six representatives planning to travel to Russia next week to discuss the Boston Marathon bombing investigations, the Boston Globe reports. "President Barack Obama believes firmly in freedom of the press and does not want journalists to be ...

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    News Wrap: Fast-Moving Wildfires Reach Pacific Ocean in California

    May 03, 2013 04:00 AM EDT

    ... The U.S. Department of Homeland Security has ordered customs officials to check the validity of all international student visas in the wake of the Boston Marathon bombings. The order came in an internal memo obtained by the Associated Press. The checks are effective immediately and mark the first U ...

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    Three College Friends of Dzhokhar Tsarnaev Arrested for Roles After the Bombing

    May 01, 2013 10:03 PM EDT

    Three men who attended college with Boston Marathon bombing suspect Dzhokhar Tsarnaev were arrested and charged with disposing of evidence and lying to authorities. Gwen Ifill talks with Dina Temple-Raston, NPR's counterterrorism correspondent, about the charges and the men's friendship.

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    Obama: US Still Not Sure Who Used Chemical Weapons in Syria

    Apr 30, 2013 03:29 PM EDT

    ... conference, the president also defended the FBI's work in monitoring the activities in recent years of one of the men accused in the deadly bombing at the Boston Marathon two weeks ago. At a question and answer session that ranged from immigration legislation to recent intelligence cooperation with Russia ...

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    Special Elections Will Test Democrats in Mass., Sanford in S.C.

    Apr 30, 2013 01:34 PM EDT

    ... Elise Garofalo, Ellen Rolfes, Rebecca Jacobson and Justin Sciuletti have a heartwarming video piece on runners hitting the pavement in honor of victims of the Boston Marathon bombing. There's still time to enter the NewsHour's science rap contest. Hari Sreenivasan talks with the author of a new book ...

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    After Coming Out, Jason Collins Gets Support from Across the NBA

    Apr 29, 2013 09:32 PM EDT

    ... the Washington Wizards. In his Sports Illustrated account, the magazines' cover story for the May 6 issue, he pointed to the April 15 attack in Boston as a factor in his decision to come forward. "The recent Boston Marathon bombing reinforced the notion that I shouldn't wait for the ...

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    News Wrap: Five Car Bombs Explode in Iraq, Killing at Least 36

    Apr 29, 2013 04:00 AM EDT

    ... judge. Federal agents originally arrested another suspect, but decided they had the wrong man and let him go. It has been two weeks since the Boston Marathon bombing, and the mother of the suspects is denying that she or her sons played any role. Zubeidat Tsarnaeva told the Associated Press ...

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    News Wrap: Boston Suspect Transferred From Hospital to Prison Medical Center

    Apr 26, 2013 04:00 AM EDT

    HARI SREENIVASAN: The surviving Boston Marathon bombing suspect, Dzhokhar Tsarnaev, is now at a federal prison medical center. The 19-year-old was transferred overnight to a facility in Central Massachusetts 40 miles west of Boston. He had been treated at Boston's Beth Israel Deaconess Medical Center since his ...