[JumpCrisscross]

> I'm not asking for anything as there's noone to actually ask to, I'm asking about that

We have witnessed spacetime ripples bending the length of an inferometer chamber. These ripples are far weaker than those we can, with known physics, create. (Most of LIGO’s work involves removing the effects we unintentionally create.)

> tangible tools that may prevent the entire species as a thing from dying choked in a toxic miasma of our own creation

Bending materials with spacetime ripples is known physics. You are asking for (or about or whatever) something we have.

If you are unsatisfied with anything short of a functioning interstellar drive, see the earlier point about demanding light bulbs from those just grinding lenses. There are those doing the work. There are those oblivious of it. And there are those shouting at it.