But again, long-term storage is the problem.

ECONOMIST: Digital photography

But that raises the problem of long-term storage: where should pictures be stored once the camera's memory is full?

ECONOMIST: Digital photography

But government has a long history of encouraging emerging technologies, and that continues, from energy storage to fuel cells.

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But doing so would be a long-term challenge and delivering that much might even necessitate Saudi Aramco dipping into storage.

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