The Prime Minister has said he will not paying the billions of dollars Treasury estimates is needed for New Zealand to meet its climate commitments. Treasury today said it could cost up to $5 billion to pay for overseas carbon credits, to meet a shortfall in the country's pledge to halve greenhouse gas emissions by 2030. At Fieldays in Hamilton, Christopher Luxon said New Zealand was staying in the Paris Agreement but the government won't chase emissions reductions at the expense of economic growth. Climate change correspondent Kate Newton reports.