An Inconvenient Sequel: Truth to Power (PG)
★★★

MORE than a decade ago, former vice-president Al Gore delivered a startling call to action to fight climate change in the form of his Oscar-winning documentary An Inconvenient Truth, so named for the way in which it was presenting information that people didn’t really want to hear but couldn’t be denied.

Now he’s back with a follow-up that feels like the second alarm that goes off after you’ve hit the snooze button to remind you that you really do need to get up now.

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In part this one feels like a reiteration of what he presented before in that much discussed and in places disputed documentary, a kind of shouting-louder-this-time reminder fuelled with the information about what has happened to the planet since, the struggles to get world nations and their leaders to take action and the extremely recent road block put up when President Trump announced the United States’ withdrawal from the Paris Climate Agreement.

While this quite unexpected but nevertheless valuable sequel doesn’t quite have the shattering impact of the first one, Gore’s arguments remain persuasive and compelling. He utilises a mixture of cold, hard facts – although there’s less a feeling of it being one extended PowerPoint presentation this time around – and his decades-long passion to doing his part delivered in his trademark amiable yet absorbing style.

Much of the doc focuses on Gore travelling around the world giving talks to groups of people training to be citizen activists for climate change and advocates for greener energy that could put a great dent in its impact, chief among them is the idea of solar panels on a massive scale, particularly in developing countries like India.

It’s messier and more unwieldy than its predecessor – as is the case with most sequels – and chances are it’s not going to convince anyone not already firmly on board with its forward-thinking ideas. But it’s undeniably infused with a rousing sense of hope and is a heartfelt second wake-up call in the face of an eternally bleak subject matter.

The film’s subtitle is Gore’s reaffirmed base position, the need to convince people in power to choose the future ahead of immediate financial and political interests, to keep upcoming generations in mind by leaving the planet in a better state than which we found it. Gore makes his case for re-engaging with that most unavoidable of world issues with re-energized urgency and straight-down-the-line sincerity.