What's the Beginning of Climate Change?

We're having a lot of tree species have trouble here in the west becauseof of how much hotter the summers are and how much drier things have gotten. I think that we're just starting to see the beginning of climate change, like ing species, you know, up the mountainyes, off the mountain out west," he says. "I'm interested ind kind of tracing the root of that explosion, if that makes sense"