Storage Medium Supposed to Last for One Billion Years by Boffins

To read this paper from Cornell University Library, click on:
Towards Gigayear Storage Using a Silicon-Nitride/Tungsten Based Medium
by Jeroen de Vries, Dimitri Schellenberg, Leon Abelmann, Andreas Manz, Miko Elwenspoek
Current digital storage systems are able to store huge amounts of data. Even though the data density of digital information storage has increased tremendously over the last few decades, the data longevity is limited to only a few decades. If we want to preserve anything about the human race which can outlast the human race itself, we require a storage medium designed to last for 1 million to 1 billion years. In this paper a medium is investigated consisting of tungsten encapsulated by siliconnitride which, according to elevated temperature tests, will last for well over the suggested time.