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President Obama Mourns School Massacre

President Obama Mourns School Massacre

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3:52
Offering Protection for Kids in the Wake of Shooting

Offering Protection for Kids in the Wake of Shooting

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Over 100,000 Young Immigrants Granted Deportation Reprieve

Over 100,000 Young Immigrants Granted Deportation Reprieve

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Shields and Brooks on Gun Control Policy, Susan Rice

Shields and Brooks on Gun Control Policy, Susan Rice

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Polarized Egypt Protests and Prepares for Referendum Vote

Polarized Egypt Protests and Prepares for Referendum Vote

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How Tragic Events Unfolded at Sandy Hook in Connecticut

How Tragic Events Unfolded at Sandy Hook in Connecticut

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Memorials, Flags at Half-Staff Mark Mourning in Newtown

Memorials, Flags at Half-Staff Mark Mourning in Newtown

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Kids Need Sense of Normalcy, Reassurance in Time of Crisis

Kids Need Sense of Normalcy, Reassurance in Time of Crisis

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Dianne Feinstein to Reintroduce Expired Assault Weapons Ban

Dianne Feinstein to Reintroduce Expired Assault Weapons Ban

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Revisiting Mental Health, Gun Control Policy After Tragedy

Revisiting Mental Health, Gun Control Policy After Tragedy

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Funerals Begin for Shooting Victims of Sandy Hook

Funerals Begin for Shooting Victims of Sandy Hook

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In India, Modi Is a Popular, Polarizing Figure in Politics

In India, Modi Is a Popular, Polarizing Figure in Politics

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PBS News Hour

Bottoms Up to Finding Connection Between Genes and Addiction

Scientists have not found one master alcoholism gene in DNA but rather several that may affect a person's susceptibility. Science correspondent Miles O'Brien goes under the influence to examine the genetic science behind alcoholism and other addictions, and how the answers point to great challenges in curing substance abuse.
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