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2015 paris climate conference

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Dec 02

Watch 7:28
Why 2 degrees Celsius is climate change’s magic number

By PBS News Hour

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…

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Dec 01

Watch 3:10
World leaders depart Paris, leaving negotiators to hash out climate accord

By PBS News Hour

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Nov 29

What to expect from the COP21 climate talks in Paris

By Andrew Mach

Even as world leaders descend upon the city in hopes of reaching an agreement to halt climate change, the main variable setting apart the 2015 Paris Climate Conference are the realities of global security.

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