Al Gore’s latest global warming movie will open in U.S. theaters on Friday. “An Inconvenient Sequel: Truth to Power” arrives eleven years after his award-winning “An Inconvenient Truth.” In the interim, conservatives like talk-radio host Rush Limbaugh haven’t let Mr. Gore forget his most dire and least accurate weather predictions. But the Gore analysis on another issue is being rejected by even some of his committed climate allies.

The good news for all of us is that Mr. Gore appears to have overstated the threat of eco-apocalypse, which he seems to implicitly acknowledge on his latest media tour.

Back in 2006, CBS News reported on Mr. Gore’s arrival at the Sundance Film Festival:

The former vice president came to town for the premiere of “An Inconvenient Truth,” a documentary chronicling what has become his crusade since losing the 2000 presidential election: Educating the masses that global warming is about to toast our ecology and our way of life.

...Americans have been hearing it for decades, wavering between belief and skepticism that it all may just be a natural part of Earth’s cyclical warming and cooling phases.

And politicians and corporations have been ignoring the issue for decades, to the point that unless drastic measures to reduce greenhouse gases are taken within the next 10 years, the world will reach a point of no return, Gore said.

Eleven years later, the mischief makers at the Climate Depot website asked him about the 10-year deadline at this year’s festival—just before he climbed into a large chauffeured sport-utility vehicle. He didn’t have much to say then, but in the absence of drastic global measures, it’s clear that Mr. Gore now believes that the end is not quite nigh. The tech website CNET describes an “optimistic” Mr. Gore with a “sunny outlook” discussing his latest cinematic venture with a crowd in San Francisco.

The new movie will likely spark more discussion about the accuracy of various Gore environmental predictions. The left-leaning Politifact has flagged several “half-truths” from the former vice president.