Have you ever seen the pictures of the ocean after the gulf oil spill? They never did fix that - they just sprayed chemicals that sunk the oil to the bottom of the gulf, creating a dead zone (with help from agricultural chemical runoff from the Mississippi River). And the people there never did get treated for all their medical issues, even though most of their food comes out of that ocean. That's also why we need Medicare for all btw - so we can make sure the EPA, CDC, and other government organizations are actually doing their job and people are actually taken care of when something goes wrong.