Predator Free 2050 plan revealed

It's being called an Apollo Walk by the Conservation Minister and impossible by others. Predator Free 2050 aims to rid the country of rats cats, stoats ferrets and possums in the next 34 years, and return the birdsong choir to those parts of the cathedral it has disappeared from. Entrepreneur Ed Chignell has taken on the gargantuan task and describes how he plans to go about it.