This article claims that by the year 2100, much of Louisiana will be underwater. I suspect a lot of people will hear that, do the math on how old they'd have to live to be to see that and shrug.
There are, of course, folks who want to do something to stop that, regardless of whether they'll be around then. I suggest they start listing some of the bad things that might happen before 2100. If the disaster will be complete by 2100, some calamities will have to occur well before then, possibly even in our lifetimes.
In the meantime, there are those in Southern Florida who want to break off from the U.S. and form their own state to better deal with their not-dissimilar problem. Disney World is in Southern Florida. Why don't we just let Disney run this new state because, you know, they will anyway?