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WebUrbanist has an interesting gallery of time capsules old and new. The prize for most ambitious “expiration date” goes to the Svalbard Global Seed Vault in Norway–WU claims barley seed samples interred there may remain viable for as long as 20,000 years. For time capsule enthusiasts, the germane Wikimedia Commons Category also makes for interesting browsing. [Thanks, Billy Baque!]

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