Liked the video, and yes as far as I see the content was factual in terms of historical temperatures and ice age. When you look back about 500,000 years the earth has been under an ice age for about 90% of the time, and it is has only been livable for about 10% of the time.
What also seems to happen is that the dust particles we have sent up into the atmosphere actually causes cooling of the earth, at least locally and this dust/crap has sort of counter acted the CO2 we also are sending up. Complicated and interesting stuff.
In case we are heading into the next ice age, I have an idea for a 'global warming machine' that is going to make me filthy rich and I will invite all of you to Hilton Kodiak in Las Vegas for our big brawl.