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

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

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Why students may benefit from year-round schooling

Why students may benefit from year-round schooling

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U.S. unemployment decrease reflects more workforce dropouts

U.S. unemployment decrease reflects more workforce dropouts

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Who will fight the Islamic State on the ground?

Who will fight the Islamic State on the ground?

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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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Could NATO member states benefit from the Ukraine crisis?

Could NATO member states benefit from the Ukraine crisis?

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Colorado fights over who decides where to frack

Colorado fights over who decides where to frack

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Obama’s delay on immigration draws fire from both parties

Obama’s delay on immigration draws fire from both parties

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Will stalling immigration reform help Democrats?

Will stalling immigration reform help Democrats?

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Can the Islamic State group be destroyed?

Can the Islamic State group be destroyed?

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Senators debate president’s power to fight the Islamic State

Senators debate president’s power to fight the Islamic State

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Ascent to ALMA's high site

Ascent to ALMA's high site

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PBS News Hour

Can dogs be trained to detect the smell of cancer?

For the past few decades, researchers have been exploring the possibility that cancer, possibly created by the growth of tumors, actually has a particular odor -- and dogs can pick up on that smell. Some doctors believe this area of research may lead to more efficient screening methods and cancer treatment procedures. Special correspondent Dr. Emily Senay reports.
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