Even for the die-hards who deny global warming despite all the evidence, it’s getting more difficult to keep their addled pates buried in the sand.

I have firsthand (albeit anecdotal) evidence that climate change is occurring. I grew up in North Florida, an area that sits right at the border of the northern hardwood forests and more subtropical Central and South Florida.

When I was a kid, there were no butterflies at all during the winter. Not the first one. Now when we visit North Florida in the winter, we see a wide variety of butterflies throughout the season. That’s an observable change in my lifetime, all due to climate change.