evidence: On Monday, Gavin Schmidt, a top climate scientist at NASA, tweeted that a paper he co-authored in 2010 used an almost identical phrase in its title – "principal control knob" — as the CNBC’s Squawk Box used Monday. But the paper published in Science Magazine warned about the danger of "anthropogenic," or man-made, carbon dioxide continuing "unabated." The paper said that the high rate of atmospheric CO2 increase was "particularly worrisome" and that "the atmospheric CO2 control knob is now being turned faster than at any time in the geological record." [...] Wolf added, "Our oceans absorb millions of tons of carbon dioxide a day, making them dangerously acidic. They’ve also soaked up most of man-made global warming’s excess heat, putting tremendous stress on marine life."