you know i live in a place where its common to be -40c in the winter and if global warming means i can have -10c or better in the winter, i don't think i will complain all that much... but as for the world ending, its quite possible it could end at any time, since we as humans only scan roughly 5 or so percent of the sky at any time, there could be a massive asteroid coming right at us and we would never know.. live life to its fullest one day at a time