HumansThe secrets of your past that lurk inside your earsIt’s not just a yucky bodily secretion – unique chemical signatures in ear wax contain clues to everything from drug misuse to festive overindulgenceFeatures
HumansCalendar synaesthesia: The people who can see timeFor some the year is a C stretching out in front of them, for others it’s a hula hoop. The ways some people visualise calendars could shed light on memory itselfFeatures