Have you noticed that the leaves turned color about the same time as usual this year? It could be because CO2 caused them to change both later and earlier than usual, resulting in no net change

Fall Leaves: Delayed By Climate Change?

Is the annual turning of fall leaves into brilliant colors being delayed by climate change?

That's the theory of some scientists given the record temperatures in the U.S. this year, which will likely mean colors changing later, exaggerating an ongoing trend.
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In short, maybe push back that trip to Vermont by a week or two. Or if you're a climate change denier, rip the liberal media for distorting the facts to foster its own agenda.

America's drought of political will on climate change | Naomi Wolf | Comment is free | guardian.co.uk

It is weird, too, to watch the leaves turn red earlier and earlier in the fall in the American northeast and have absolutely everyone say, "the weather is strange" – yet never see mainstream media reflect any interest in the connection between human industrial activity and that strangeness.