Global cooling has always been the real threat. We are in the middle of the Quaternary Ice age nearing the end of our very long interglacial period optimum.
But what they are talking about here is a mini ice age though. Mini ice age is nothing compared to real glaciation.
http://en.wikipedia.org/wiki/Quaternary_glaciation
Thanks for that link!
(http://en.wikipedia.org/wiki/Quaternary_glaciation)
I view Wikipedia as a great source for general information but I always keep in mind that any particular fact(s) or premise can be rather easily fabricated or altered.
Some of this dis-info probably gets corrected as time goes by. But on any of the hot button issues (i.e. politics) or about specific biographies, etc., I read but try to remain open-minded.