These days, it's easy to feel all doom and gloom about the state of the world. How could you not? Regardless, you should know that you're not alone. Believe it or not, one of the world's most celebrated scientists, Stephen Hawking, didn't have the most optimistic outlook either. So if someone with his intellectual genius was just as concerned about humanity and the longevity of our planet we are, is our species truly without hope? Whatever the case may be, these are the details of how Stephen Hawking predicted the end of the world.