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I notice that Christy's comment is not in quotes. I wonder what he really said and in what context.

The statement immediately following the paraphrase appears to be a direct quote from Christy.

"It is scientifically inconceivable that after changing forests into cities, turning millions of acres into farmland, putting massive quantities of soot and dust into the atmosphere and sending quantities of greenhouse gases into the air, that the natural course of climate change hasn't been increased in the past century."

I think that's a reasonable statement.

"It is scientifically inconceivable that after changing forests into cities, turning millions of acres into farmland, putting massive quantities of soot and dust into the atmosphere and sending quantities of greenhouse gases into the air, that the natural course of climate change hasn't been increased in the past century."

Of couse quantifying that change and determining its direction and degree of it's effect in comparison with natural events is another thing altogether.

CO₂ + Solar Temperature Anomaly Reconstruction, ^oC
CO₂ contribution to temperature (blue area)
Solar contribution to temperature anomaly (red area)

Bottomline, more than 70% of the variation in Earth's global temperature is Solar related.

From the analysis, total changes in CO2 concentration (natural + anthropogenic) can only be used to account for a linear 0.0266^oC/decade (0.266^oC for the next 100years).

Temperature change due to CO2 is a log function of concentration of CO2. Iit can be maintained in a linear rise only so long as the sources of that CO2(whether natural or anthropogenic) can increase at an exponential rate.

The statement immediately following the paraphrase appears to be a direct quote from Christy.

Yeah that's the impression you would get until you look real close but it doesn't sound like something a good scientist would say. The statement doesn't quantify anything at all and it uses relative terms like "massive" when the truth is that our CO2 emissions are microscopic relative to nature.

I'd wager that the statement was made by the interviewer and Christy was forced to agree. I'd pay a thousand dollars for a recording of that phone conversation.