DNA molecules are well known as carriers of huge amounts of biological information, and there is growing interest in using DNA in engineered data storage devices that can hold vastly more data than our current hard drives. But new research shows that DNA isn't the only game in town when it comes to molecular data storage. A study led by Brown University researchers shows that it's possible to store and retrieve data stored in artificial metabolomes—arrays of liquid mixtures containing sugars, amino acids and other types of small molecules. For a paper published in the journal PLOS ONE, the researchers...