From 30 precious milligrams drilled out of the sample they extracted mitochondrial DNA. The mitochondria, a cell's power packs, are the much-modified descendants of bacteria that took up residence in the ancestors of modern animal and plant cells a billion years ago.

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These structures are a cell's power-packs.

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The updated model doubles the memory to 4GB RAM, expands the hard drive storage to 320GB, and packs a 6-cell battery with a rated life of 6 hours.

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That new hardware is evidently smaller than what it's replacing: though the Pro shares the same size chassis as its predecessor, it packs a 74Wh battery (the older Blade has a 60Wh cell).

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