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Police still searching for motive in San Bernardino case

Police still searching for motive in San Bernardino case

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Ash Carter on a military turning point for women in combat

Ash Carter on a military turning point for women in combat

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The terrorism question looming over San Bernardino

The terrorism question looming over San Bernardino

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Ambassador Power on uniting anti-ISIS coalition

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News Wrap: U.S. economy turns in solid November jobs numbers

News Wrap: U.S. economy turns in solid November jobs numbers

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Nigeria, a country of pain, promise and complexity

Nigeria, a country of pain, promise and complexity

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Shields and Brooks on the San Bernardino shooting

Shields and Brooks on the San Bernardino shooting

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How to solve Puerto Rico's food crisis? Eat local.

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Women take a stand against violence in Spike Lee’s ‘Chi-Raq’

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How can law enforcement prevent self-radicalization?

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Climate talks move forward, but political roadblocks remain

Climate talks move forward, but political roadblocks remain

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PBS News Hour

Why 2 degrees Celsius is climate change’s magic number

We hear all the time that we need to stop the planet from warming an additional two degrees Celsius above pre-industrial levels. Why is that specific number so important though? And what happens if we exceed that limit? William Brangham offers some background on that climate science target.
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