"Snow won't dampen global warming rallies"

That's the headline from a news story in Michigan's Grand Rapids Press, which continues:

The weather forecast for Saturday's global warming rallies in Grand Rapids and Holland calls for snow and cold rain and temperatures in the 40s -- about 10 degrees below normal.

For some, this might make global warming a tough sell.

"I've thought of that," said Lisa Locke, associate director of the West Michigan Environmental Action Council, which is organizing the three Grand Rapids "Step it Up" rallies.

"I think that's an easy excuse, but if we're really reasonable about it, we're not talking about individual weather on individual days," Locke said. "We're talking about something much larger, on a global scale, which science has been tracking for decades."

Ms. Locke is correct: Climate change is about long-term trends, not the daily weather. But be sure to keep those words in mind this summer, too, when every passing heat wave is used as an example of "global warming."

And now for a prediction of my own: In the end, the global warming "crisis" will turn out not to be a lesson on caring for the Earth, but on how science and politics really work.