<A target="_blank" href="http://www.computerworld.com/s/article/9218881/Start_up_to_release_stone_like_optical_disc_that_lasts_forever">Millenniata and Hitachi-LG Data Storage will soon be releasing an optical disc</A> that can withstand a dip in liquid nitrogen followed by a dunk in boiling water. The discs will supposedly last "forever" or at least past the point where you have anything capable of reading them.