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This long-term data storage will last 14 billion years
(www.theregister.com)
This is a most excellent place for technology news and articles.
Remember Memristors? They're commercially available today, at 200 EUR per bit.
wow, sign me up for a couple of dozen terabytes of that!
I also remember people burning pitts on scotch tape, then rolling it up and reading it in 3d :)