An astrophysicist was speaking to a woman's club about the future of our sun and how, in about two billion years, it would become a red giant star and burn our Earth to a crisp. After his talk was finished a woman of a certain age frantically accosted him and asked him if he had said two million years or two billion years. He replied, "two billion years," to which she sighed and responded, "thank goodness!"
Which brings us to a similar news story about the Catalina Island off of California's shores near Los Angeles. Apparently this island is eventually going to sink under the ocean causing a tsunami which could wipe out L.A. ... but this could probably take up to three million years ... see: Breitbart Article.
I don't think that anyone other than the matron at that woman's club and Al Gore should be lying awake nights worrying about such a possibility.