In
the centuries to come, history books will likely look back on September
2016 as a major milestone for the world’s climate. At a time when
atmospheric carbon dioxide is usually at its minimum, the monthly value
failed to drop below 400 parts per million.
That all but ensures that 2016 will be the year that carbon dioxide
officially passed the symbolic 400 ppm mark, never to return below it in
our lifetimes, according to scientists. Read on web site Climate Central
Researching and reporting thescience and impacts of climate change
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