E-cigarette use is seen as widespread, common and normal among young Australians even though hard data indicate that the clear majority of teens have not vaped, a first-of-its-kind study from The Australian National University (ANU) shows.
Far from a random phenomenon, the regular rotation of 29 February into our calendar every four years – with some exceptions! – is based on calculations developed centuries ago. Dr Brad Tucker. astrophysicist at the ANU, explains the science behind the leap year.
