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.
Tags: 2015, Climate Policy, COP, COP21, Michael Oppenheimer, PBS, Richard Alley, Video
Categories: Carbon Dioxide (CO2), Climate Change, Climate Policy, Video, World News
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