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Boko Haram 'empties out entire countryside' in new attacks

Boko Haram 'empties out entire countryside' in new attacks

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3:20
Could NATO member states benefit from the Ukraine crisis?

Could NATO member states benefit from the Ukraine crisis?

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4:10
Colorado fights over who decides where to frack

Colorado fights over who decides where to frack

Video
8:58
Obama’s delay on immigration draws fire from both parties

Obama’s delay on immigration draws fire from both parties

Video
2:42
Will stalling immigration reform help Democrats?

Will stalling immigration reform help Democrats?

Video
7:52
Can the Islamic State group be destroyed?

Can the Islamic State group be destroyed?

Video
9:34
Senators debate president’s power to fight the Islamic State

Senators debate president’s power to fight the Islamic State

Video
8:50
Ascent to ALMA's high site

Ascent to ALMA's high site

Video
1:25
With rakes and ropes, beaches become momentary works of art

With rakes and ropes, beaches become momentary works of art

Video
5:33
U.S. offers support to fragile health systems to fight Ebola

U.S. offers support to fragile health systems to fight Ebola

Video
9:43
Using drones to limit fertilizer flow into Lake Erie

Using drones to limit fertilizer flow into Lake Erie

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7:53
Giving Americans better tools to prevent domestic violence

Giving Americans better tools to prevent domestic violence

Video
7:18
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PBS News Hour

Lifesavers in training: A day in the life of working dogs

At the Penn Vet Working Dog Center in Philadelphia, service dogs go through a rigorous training course, including search and rescue, obedience and agility drills in order to eventually fill a variety of jobs helping people.