Doom mongers have predicted for thousands of years that the end of the world is nigh. It is true that our planet will cease to exist when the Sun's hydrogen fuel becomes depleted. In the last 4 billion years, it has used about half of its supply, which means it's good for another 4.5 billion years or so. Now that we've confirmed the worst possible scenario Mankind could ever experience is going to occur, how worried do you feel? Good! Neither should you be focusing so intently on something else that simply doesn't deserve such attention.