Recent reports suggest that the atmospheric concentrations of 'greenhouse' carbon dioxide were in 2016 at their highest level for some 3 million years (https://www.theguardian.com/environment/2017/oct/30/global-atmospheric-co2-levels-hit-record-high). The rocketing CO2 levels (with effects on both climate change and acidification of the oceans) have been blamed on a combination of human activity and the el Nino weather event in the Pacific region but the consequences might well be extreme (and suggest that attempts to limit the release of this gas are currently inadequate). Not a good start for the enlightened 'fight-back' to counter anthropogenic effects!
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