The eco-thriller - saving some-place or the world from an ecological disaster - is a subgenre of the disaster movie; but with pretentions of being deeper, more thoughtful, more idealistic.
The genre got going in the 1970s, I think; for example I have just read Raven (1977) by Jeremy Burnham and Trevor Ray; which is a modern Arthurian adventure for children, with the specific objective of saving sacred ancient caves from becoming a nuclear dump. 1985 saw a high impact adult TV drama called Edge of Darkness - again about nuclear waste contamination. The eco theme has since become a staple of Hollywood blockbuster movies, and B (or C) movies.
But - like everything else in modern culture; the eco-thriller tries to present a positive message from ingredients that are actually double-negative: the hero is not making life better, but is saving life from a threat.
Such double-nativity is, of course, the entire basis of all mainstream modern politics. There are now no utopians.
Consider the mainstream Litmus Tests - climate change is entirely about 'saving the world' from (what is asserted to be) human caused and harmful raising of the average global temperature - there is no positive message at all.
Antiracism (or feminism, or the gaytrans agendas) all claim (only) to be against negative-discrimination (or even, bizarrely, compensating for historical injustice) - and they do not even attempt to sketch out the kind of 'better future world' that they are supposed to be aiming-at.
And the latest and greatest left-mania of the birdemic-peck alleges its motivation to be nothing more than keeping (almost entirely) already-old and -sick people alive for a bit longer. There is zero consideration of what used to be the leftist mania of 'quality of life'. And any serious consideration of the adverse future consequences of this present policy is ruthlessly stamped-down.
We have arrived at a point where the world is ruled by fear, and must be ruled by fear, of death - because there is no positive, remotely-plausible better future towards which we must strive. Thus an already demotivated population is further reduced to mere survivalism; grasping and gripping at their few remaining 'allowed' pleasures and freedoms.
I do not contradict this pessimistic vision of The World, and this mortal life - it is a real thing. Of course, there is (for Christians) real hope, and the assurance of a (much) better future - but not in this world and mortal life; but on the other side of death, and only attainable by dying.
Here is another instance of the black and white nature of life, now. The world offers us only fear and despair; only Christianity offers us optimism.
Either we place hope in this world, which world does not even anymore pretend to offer grounds for hope - but rules only by ever-bigger sticks compensating for ever-smaller, ever-fewer this-worldly carrots. This can only end in despair - there is nowhere else it can end.
Or, we place our hope in the next world, sustained by determination to follow Jesus Christ to resurrected life in Heaven.
Here and now, there really are no other actual, living, motivation alternatives.