Marx described the problem, communism tried, and failed to solve it. He didn't create the problem of capital vs labour inequality, though.
(Meanwhile, many of the rights workers have gained over the twentieth century were given to them because of the fear that they will turn to communism.)
You can't do "positive" or "negative" things the The Earth. It is a lump of mass shot through with potential energy and lattice opportunities. Net positives and negatives are subjective assessments by perspectives constrained within a framework. The earth is the super constraint on humanity, at least for the time being. The oxygen rich atmosphere is not objectively better than the nitrogen rich atmosphere, but it is subjectively worse for us.
It's a fools game anyway. Erase the homo sapiens and some other primate gets spared a genocide. I have never understood the value in anthropomorphizing the planet outside of political manipulation.
