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Five Years On: Lessons Learned from the Collapse?

Five Years On: Lessons Learned from the Collapse?

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1:52
Five Years On: Lessons Learned from the Collapse?

Five Years On: Lessons Learned from the Collapse?

Video
1:52
Witnesses Raise Security Concerns at Navy Yard Post-Shooting

Witnesses Raise Security Concerns at Navy Yard Post-Shooting

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4:46
Chemical Weapons Deal May Offer Tipoff of Assad's Intentions

Chemical Weapons Deal May Offer Tipoff of Assad's Intentions

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5:50
Free Syrian Army Chief: Weapon Donations Find 'Right Hands'

Free Syrian Army Chief: Weapon Donations Find 'Right Hands'

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5:34
With Summers Out, Who WIll Be Tapped to Succeed Bernanke?

With Summers Out, Who WIll Be Tapped to Succeed Bernanke?

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5:36
Henry Paulson Wishes He Had Today's Regulatory Tools

Henry Paulson Wishes He Had Today's Regulatory Tools

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8:24
How Did Aaron Alexis Get Security Clearance?

How Did Aaron Alexis Get Security Clearance?

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7:29
Unmapped Routes May Pose Dangers for Shipping Boom in Arctic

Unmapped Routes May Pose Dangers for Shipping Boom in Arctic

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8:45
Edwidge Danticat Reaches Back and Forward in Her New Novel

Edwidge Danticat Reaches Back and Forward in Her New Novel

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8:04
Navy Yard Tragedy Draws Attention to Facility Security

Navy Yard Tragedy Draws Attention to Facility Security

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8:45
Residents Find 'Nothing Salvageable' in Post-Flood Colorado

Residents Find 'Nothing Salvageable' in Post-Flood Colorado

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4:43
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PBS News Hour

As Goes Maine? A Tidal Energy Project Powers Up

One of the big obstacles to clean energy is that most renewable sources are unreliable. A Maine company has installed the nation’s first commercial, grid connected tidal energy project. Water power - including conventional hydropower and new technologies like ORPC’s tidal turbine - is estimated to nearly double by 2030 and provide an estimated 15% of the total domestic electricity supply.
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