Best of the Week - 20 March 2015

Highlights from Radio New Zealand National's programmes for the week ending Friday 20 March. This week.....how the media coped with the announcement of a potential poisoning threat to infant milk powder; food spies - protecting us all; exploring the impacts of digital weapons; central government's new Auckland management; understanding and rewriting our past through modern science; revisiting the chase to find moa on the West Coast; 48 hours of mind-altering drugs in Ireland; the deadly mating rituals of spiders; actor Alan Rickman - Causing Chaos; and highlights from WOMAD Taranaki.