[nopassrecover]

A bit incidental, but would there be any risk of a sealed time capsule delivering viruses/bacteria to the future?

[josscrowcroft]

That's the first thing I thought of as well - immunity to certain basic things might have evolved out by then.

I wonder whether bacteria or viruses could survive that long in those conditions?

[rubinelli]

Some bacteria can hibernate for millions of years in spore form. There was some speculation that the "Curse of the Pharaos" was caused by pathogenic bacteria or fungus-produced toxins, so yes, anyone opening that crypt should better be careful.