No matter how much we may not want to think about it, we have to face the fact that at some point, the world will come to an end.
As space.com explained, there will eventually come a time when the sun runs out of hydrogen to convert into helium and expands outward — burning us up in the process. It's extremely unlikely that any of us will still be alive when this comes to pass, but there are other worrying signs that we could die out long before before the sun has a chance to take us with it.
Such concerns have led scientists to come up with contingency plans for the survival of this planet's diverse array of life forms and one team has recently cooked up a very ambitious one.