Smallest. Map. Ever.
Scientists at Cal Tech (their site) have manipulated strands of DNA to create, among other things, a map of the Americas that is only a few hundred nanometres across. That’s smaller than human hair or bacteria; in cartographic terms, that’s mapping on a scale of 1:200,000,000,000,000. More details at News@Nature; see coverage from BBC News and Boing Boing (via which).
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