Yes. Saving the Earth is colloquial, a kind of shorthand. But it makes a point.

I think you are more than smart enough to understand this.

Natural Law—although it doesn’t care—says that our continued spewing of CO2 by burning massive quantities of fossil fuels—will alter the biosphere such that life for our children and generations to follow, will find it very, very challenging to survive.

I think wordsmithing misses the point. I can’t tell you how many times I’ve heard this tired argument.