“The ice age was caused by the joining of North and South America because of volcanic activity. This changed the ocean currents and then you have an ice age.”
That statement is highly speculative and I would place no credence in it what so ever.
“From 10,000 years ago to 2,000,000 ago between that time the ice sheets expanded and retreated many times.”
But the ice never retreated all that much. All of this stuff on the HC is becoming more and more junk and speculative science presented as “fact” ie “settled” science.
Which leads to their point about man made global warming: if you fall for the first erroneous misdirection, then you will buy the second.
HC is becoming a propaganda and de-educator of the watching public. Take everything including Lock & Load (which ommited in its machine gun segiment the major and first machine pistol made by the germans in WWII) with several grains of salt.
It is nice to see these events portrayed in color and moving graphics with faux actors, rather than dry text books and papers. Bad science is one thing, but intentional misrepresentation another.
I agree with you that the reasoning presented is highly speculative, and not even close to accepted.