I'm waving hands a fair bit here, and I am doing that because I believe that it is internally coherent, so if you accept these things, you shouldn't need the story to suggest answers. I'm including as much information as I think is relevant, but trying not to give more than is helpful to answer the question... Hopefully I did ok, lol. So...
Here's the premise:
There exists a species of creature that travels through spacetime by manipulating multiple dimensions. This creature was spawned into the three spatial dimensions on a near-mid-Miocene-Earth, matured into more dimensions, and left once mature. Like a salmon returning to its spawning grounds, the creature has returned, and is pregnant.
In this near-Earth's prehistory, the arrival of this creature's parent is why the mid-Miocene became so hot, and the departure of this creature and its spawn-mates is the triggering event that led to the gradual cooling of the planet, and thus the mid-Miocene extinctions.
When this individual returns to spawn, it finds the current climate unsuitable for spawning, and so it engages in "nesting" behaviors that would result in a return to a climate more like the one it was spawned into.
I have posited that some nesting behaviors of such a creature may include triggering continental drift to change wind and temperature behaviors (like the ones that made the plains and deserts, the seasons and trade winds of today), similarly to contribute to seismic activity, to both trigger volcanic eruptions as well as earthquakes which could shift carbon deposits to the surface where they could be returned to the atmosphere more easily...
Here's my question:
How could it make sense that the creature causing earthquakes, moving the continents, and changing the winds could also affect the perception and behaviors of the creatures alive on the planet?
What abilities might such a creature have that would cause animals, including and especially people, to engage in behaviors that would potentially cause disruptions (maybe like war, drilling, industrial manufacturing, making a lot of plastic, burning fossil fuels, etc.) that would potentially accelerate the nesting (that is, shift the climate towards a mid-Miocene-like climate) less directly than blowing up a megavolcano (like what occurred in the mid-Miocene).
I've thought of things like the fungus that causes ants to climb up high and hang on and then explode into spores, creating conditions suitable for its reproduction - and the brain parasite that reproduces in the digestive tract of cats causes mice to be less afraid but makes people more likely to be in a car crash, and even the extra-hand-wavey direct psychic manipulation.
NB: This entity should not be overtly malicious, it's just trying to make its nest, it is intelligent, but is either unaware or otherwise uncaring about the fate of the other inhabitants of the spawning grounds (in this case, Earth) in the same way the aforementioned salmon would be unaware or uncaring about what the other fish in the river are doing - they're either food, competition, a means to an end, or completely irrelevant.
Thanks for sharing your thoughts!