Best of the Week - 30 March 2012

Highlights from Radio New Zealand National's programmes for the week ending Friday 30 March. This week .... tributes for Professor Sir Paul Callaghan who died on Saturday and hear where his love of science and people came from, a Kiwi's involvement in the search for the God particle, the shortage of a yeasty spread has the media in a lather, how Da Vinci's Vitruvian Man has helped to unravel the secrets of the Universe, Dear Dot...the "social media" in NZ before the age of computers, the freezing sport of curling and the digitisation of the New Zealand Year Books.