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Genetically engineered bacterium could help to purify rare-earth metals



Scientists have genetically modified a tiny bacterium to rapidly purify the rare-earth metals used in computers, electric car batteries and hard drives.

The new technique, described in a paper published Dec. 6 in the journal Synthetic Biology, could one day replace the environmentally harmful methods currently used to separate these elements from the  metals with which they’re normally found, researchers said.

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