Humans with our vast knowledge of how the planet should be, gleaned from measurements taken over the last few hundred years interpreted through a lens of scientific hubris, have determined that artificial cooling, blackening the atmosphere and the continued decline of breathable oxygen is necessary to maintain an environmental “status quo” which definitely will put a stop to our current mass extinction event, and all future mass extinction events.
Humans know what is best for ecology. Like that one time the scientific community decided to put a stop to forest fires in Yosemite and accidentally fucked the park ecology in the process. Turns out those fires, which had been happening longer than even the residency of the native Americans who we stole Yosemite from, those fires served a useful ecological purpose for the reproduction of rainforest trees. But everyone makes mistakes. I’m sure blackening Earth’s atmosphere will be fine.
Or maybe, just maybe, the only way to prevent our planet from becoming the next Mars is to start terraforming the shit out of it right now. We should make it like it was when the dinosaurs thrived. More oxygen, more nitrogen, a lot more CO2 and giant plants.
We should start burning all the fossil fuels possible. Just burning them. Release quadrillions of tons of CO2 into the atmosphere. Green house to the max. Heat the earth. Plants will love it. The atmosphere will be thick with a beautiful cocktail of oxygen, nitrogen and diesel exhaust. Finally we can clone and rebirth all extinct species from the Jurassic age. We will bring back the dinosaurs! We will all drive around in supercharged V12 armored SUVs that get 20 gallons per mile! The Earth will be saved, at least until the sun fans into a red giant and engulfs us in flames in 800 million years.