So if the profile of climate change “true believer” is currently a well-educated, left-leaning, agnostic Generation X-er, who’s next?

Millennials. (Who else?) Given that generation’s interest in green living, its relatively soft engagement on climate compared to older Americans continues to surprise, Cox said. But that may change soon, opening up a new, wide avenue of support.

“I think they’re just not tuned in,” he said. “Every younger generation goes through the same growing pains. You start off not being connected, but as you get older, you start paying attention to issues.”

Another area of growth could be within the ranks of the faithful. Climate change, unlike abortion or gay marriage, doesn’t carry the baggage of the culture wars. And people who hear about global warming from the pulpit are more likely to call it a crisis, PRRI’s research shows.