You didn't use the article's actual title.
Anyway, the fact that there were pre-historic mega-droughts doesn't mean that AGW won't be responsible for a current one.
Artificial forcings such as increasing ocean temperature, for example, could have the same result as it did when it was natural.
No, I didn't use the title. Why do you mention it? Is that some sort of requirement or do you see that as being deceptive?
BTW, atmospheric CO2 black-body radiation-forcing is not proven science, or are you referring to another form? I am not a Physical Geographical scientist so some terms from that lexicon may not click with me immediately. I do know that there is absolutely no strong evidence that AGW is a real phenomenon. Zero. Where do you stand on that, BTW? I promise not to be unpleasant about it if you are pro-AGW, but I like to know where people stand when I am exchanging posts with them.