There's been a buzz in the papers lately about this fellow Tim Snyder who has written a book, Black Earth, directly comparing the Holocaust to climate change.
Here's a couple examples, the first one, from the NYT, sent in by Jake from our EII class, the other from the Grauniad.
You can find a lot of material in the pages of this blog and annex where I look at climate change through the lens of twentieth century history. WWII is an important comparative case, but so, I tend to think, is the Cold War.
More on this later in class.