Throughout history massive wars have resulted during these mini-ice ages
The funny thing was, however, that although the viewer would probably assume the other 6 billion people would die due to war and famine, the narrator didn't really come out and say that. He said several times, instead, that 6 billion people would have to "leave the planet". I found that to be an interesting choice of words, especially considering they were well chosen and no doubt written words and not merely those words of someone speaking "off the cuff".
Maybe the aliens are going to move us...and CBS is helping to get us thinking along those lines.
What's the frequency, Dan?