Genes carry the information that make you you. So it's fitting that, when sequenced and stored in a computer, your genome takes up gobs of memory—up to 150 gigabytes. Multiply that across all the people who have gotten sequenced, and you're looking at some serious storage issues. If that's not enough, mining those genomes for useful insight means comparing them all to each other, to medical histories, and to the millions of scientific papers about genetics.

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