An unexpected survival in St Louis

So, if there is a patch of prairie in the center of St. Louis, does this mean that the climate has stopped changing?

That is odd since much of Missouri is forested. There are pockets of natural prairie in Wisconsin which is a forested state so I am aware that it happens. From reading Mark Twain's Life on the Mississippi you get the impression that the entire western edge of the Mississippi was forested and in the process of being cut down to fuel the river boats.

"THE prairie once covered a million square miles of North America. Relentless settlement, bringing agriculture and grazing, reduced it to scattered remnants."

Um, I don't know where this author has been looking for prairie, but the prairie is definitely not reduced to scattered remnants- there is a ton of it. And yeah, its obviously not going to be in St. Louis, it's right on the Mississippi.