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Now, that national geographic piece is kinda sweet, and it's not even terribly inaccurate.
Yes, a mini ice age could happen - the models include that, especially in europe; which is pretty much what the article says.
But, national geographic is not science either, at BEST it's popular science news, a platform for advertising. The inclusion of reference to that silly movie the day after tommorrow pretty much tells you all you need to know about that article.
But, yes, a new ice age, probably a short ice age, is possible, if the atlantic conveyor current slows or stops.
And that's mot even taking into account of the new science of multi-decadal currents, vertical currents that carry heat down into the icey cold of the deep ocean. They are a relatovely new discovery - and if what those models predict is accurate, and the climate is still changing as fast as it seems to be, according to the growing body of measurements, well, all I can say is that I'll be dead before the kids have to deal with that problem.
Frankly, I kinda hope the 70s theory about the end of this interglacial period turn out to be true - but, I can't find any modern science to support the idea that a true planetary glacial age (an ice age) is likely any time in the next 3 to 5 thousand years.
But, we might get lucky.
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