Radio New Zealand: However three climate change experts say 5% is not enough and the United States and European Union are far more ambitious.
Jonathan Boston and Ralph Chapman, both of Victoria University, and Alistair Woodward of Auckland University say a 5% reduction will never meet the agreed target of limiting global warming to two degrees centigrade.
"It's totally inadequate relative to what the inter-governmental panel on climate change has indicated the developed world should be seeking," says Professor...