1578
Sea Level
(imgs.xkcd.com)
Alt text: They're up there with coral islands, lightning, and caterpillars turning into butterflies.
You know it's too expensive to fix for the people and companies with more wealth than 99.99999% of us, and with the decision maker(s) not valuing any future beyond their expected lifespan, and I don't think any of them think the previous generation will be the last generation to die
Don't worry.
They have plans underway to terrorise us with intentionally worsening it under the pretence of trying to mend it, to induce us into obedience under their tyranny, so we don't rise up against what they're doing.
Sleep tight.