This is all we've got. We need to do a better job of preserving it.
Unfortunately that would affect shareholder value.
One of the objectives of the Artemis missions is to prepare for Mars travel, none of the objectives of Artemis are to view Earth as the only planet we have nor to preserve it.
Finally: Yes, global warming is real, but the threat is different. I predict that we will far exceed the average increase in global average temperature, but we will survive. Yes, we will survive, but with some "scars".