The Last Sip by Daniel Gauss <---click to read the story.
Yes, that which sustains us also partially kills us.
Society has divided into privileged "Brain Workers" and marginalized "Inutils," while governments no longer fight pollution but merely calculate its consequences.
When an ordinary bureaucrat discovers that Earth's elite are secretly preparing to abandon the poisoned planet for a lunar colony, he faces a moral choice between exposing the truth and accepting a desperate plan for humanity's survival.
Blending satire, environmental pessimism, and tragedy, the story explores what happens when a civilization stops trying to save itself and instead learns to manage its own decline.