HumansWill tracking people via clouds of microbes stand up in court?A new technique that could tie people to crime scenes by assessing trails of microbes needs to be treated with care by the legal systemLeader
Super-recognisers could be used to identify strangers on CCTV Some people have an extraordinary ability to recognise unfamiliar faces, and research suggests their skills could be used for national security 51¶¯Âþ