DNA: the ultimate hard drive

When it comes to storing information, hard drives don’t hold a candle to DNA. Our genetic code packs billions of gigabytes into a single gram. A mere milligram of the molecule could encode the complete text of every book in the US Library of Congress and have plenty of room to spare. All of this has been mostly theoretical – until now. In a new study, researchers stored an entire genetics textbook in less than a picogram of DNA – one trillionth of a gram – an advance that could revolutionise our ability to save data.

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