Very good observation; only don’t mention it to the History Channel. The equivalent to Nazi book burning has been taking place in our main stream media only on a much more massive scale. Anything that appears to contradict the “theory” of man caused global warming no longer makes it on the air. They cannot allow any historical data to cloud the issue. Any debate weakens the resolve of the true believers and could cause the death of millions or billions of the even those yet to be born. This however is the only issue where the left is concerned about the “unborn”.
I have watch some nature shows that report on how glaciers shaped our geology when the earth warmed and glaciers receded to the frozen north. And in the same program shortly after describing how the earth cooled (to form glaciers) and warmed to melt the glaciers they talked about the danger of man made global warming/climate change/cooling.
They present the evidence that climate changes, the earth cycles from cool to warm to cool again, yet somehow, 150 years of man made pollution (industrial revolution) is the cause of climate change.
None is so blind as those that refused to see.
Yet they have run several programs which have made reference to or be the main topic about the Medieval Warm Spell (800s-1300s)! Today's temps are still apparently below that era's, proof being that Britain was growing wine grapes (historical writings) while even wild varieties cannot grow there now.
My BIG problem with Anthropogenic Global Warming (AGW) (original name before 'climate change') is that its proponents want to put the cart before the horse. While it appears that none of their climate models are capable of prediction, they are still very willing to spend and restrict to achieve a goal they cannot or will not specify! Ask the next proponent you meet this question, "What correction / change will you accept as sufficient to cease adding new regulations and/or restrictions to the general populace?"
Write if you can get any answer beyond general platitudes!