New elements added to the periodic table

Professor Andrea Sella (UCL Chemistry) discusses the addition of four new elements to the periodic table. Listen: BBC World Service 'Newshour' (from 48 mins 57 secs), More: BBC Radio 4 'Six O'Clock News' (from 28 mins 31 secs), BBC Radio 2 'Simon Mayo' (from 18 mins 27 secs), BBC World Service 'The Science Hour' (from 47 mins 39 secs)