WOW... You all know nothing about the end of the world!!!
Let me enlighten you a bit.
In a few hundred years humanity will have colonized the solar system, and a form of hyper drive will be invented. This will consist of literal passing out of our plane of existence, and entering it at another point. About a thousand years after the invention of hyper drive, the galaxy will be mostly colonized by humans. On earth, a small group of scientists will question what really lies outside our universe, and shall set about disproving the theory of parallel dimensions. They will unexpectedly discover that while our universe is the only
real universe, there lies an infinite potential for other universes to exist elsewhere, and that by trying to travel to one of these other 'verses, they can actually cause it to come into being.
Thus the hyper gate project will begin, and about half a century later, humans will make their first trip to another universe. This discovery will be followed not long after by The Dreamer project, which will be a computer designed specifically to create other verses and nexuses to encompass these new verses. Over thousands of year’s humanity shale extend its empire to other universes, creating the multiverse empire. After thirty thousand years of this prosper and a major decline in innovation and invention, the hyper gates will shut down.
Trillions of humans will end up stranded throughout the multiverse, void of the supplies and technology from the Earth Verse, as it is called. This sudden collapse of the Multidimentional Empire will be mainly cause by the evolution of humanity in our own verse. You see, while the human designed verses will be made specifically to stunt natural selection and evolution as a whole (although not entirely stop it), such measures could not be taken in our own universe. Humanity will evolve throughout thousands of planets in our galaxy, until only the earth shale still have "classic" humans. The Earth shale reject these new species, and hide and isolate itself in a time field, waiting for a time when the other species are long gone. They will wait a long time... In the rest of the multiverse, humans learn their own methods to travel between verses, and Earth becomes a mere myth.
500 million years later, however, a human will escape to our Verse from another, just as the infinite possibility of the multiverse is reduced to zero, by the hard work of an organization known as the RS... not only do all verses but the Earth Verse cease to exist, but hyperspace travel becomes impossible as well. The human who escapes the multiverse will manage to find the by then mythical earth, and warn it about the RS's plans to destroy existence completely. Earth will be given protections and weapons beyond the comprehension of us, and humanity will wait... 500 more millions years and humans change....
But I've said too much... You must forget what you've just read... It is not safe for us to know the future or the paradoxes that shale come of it... At least not yet.