"Not coincidently, the researchers note, their research showed that when plants were exposed to the same higher levels of CO2 as actually occurred over the past century, they were able to absorb on average 16 percent more CO2, which very nearly coincides with the 17 percent error difference earth scientists have found with their climate models.
Read more at: http://phys.org/news/2014-10-co2-atmosphere.html#jCp
I don't believe in coincidence, especially from people who profit from their "findings".