Pros and cons? CO2 is of course the primary carbon source for plants. Not the merest hint here of the enormous degree of planet-greening with record crop yields equivalent to millions of dollars that&#x27;s taken place as a result of the increase in atmospheric CO2.<p>When discussing the results of this increase, typically, articles like this and hundreds more 
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take pains not to mention it.<p>According to CSIRO&quot; “CO2 fertilisation correlated with an 11 per cent increase in foliage cover from 1982-2010 across parts of the arid areas studied in Australia, North America, the Middle East and Africa.” This means that arid regions across the world would have not greened if CO2 levels had not increased.&quot;.<p>Hardly worth mentioning I guess.