According to George Carlin the world will never end. It will continue, it's just us that will be gone.
Yes....that's all good...and to that is my query: what will mark the end of mankind? What will do us in? When man no longer has ANY presence on Earth...when will it be, what will have caused it? While George Carlin is quite funny & entertaining, and Dennis Miller totally ripped-off his style....he's just a comedian with punchy catch-notions.