...and come back again, only to disappear once more whereupon they reform in the next cycle. This has happened many times already and it will continue on its wa

...and come back again, only to disappear once more whereupon they reform in the next cycle. This has happened many times already and it will continue on its way until the sun heats up the atmosphere enough to boil off all water/Iceland succumbs to some massive volcanic eruption/etc. Realise that according to the prophesies of doom you are quoting you would have been dead many times over, many years ago. Seeing as how you're still around to tell us those glaciers will meet an untimely end those prophecies - and with that your claim - do not carry the weight they are often given.