You know when they talk about global warming etc, the end of the world etc. The thing is it won't be the end of the world, the planet will still exist. But I actually think what will happen one day is extreme weather, natural disasters will cause civilisation to fall, but humanity will still exist. But just imagine what that world would be like. No laws world wide etc, everybody out for them self. It would be a complete and utter apocalyptic world. I think something like this could happen in the future. Maybe not in any of our life time, but you never know. It honestly wouldn't surprise me if in the next 100 to 200 years something like this could happen.