New Zealand introduces bill for zero carbon emissions by 2050

Jacinda Ardern says law will address climate change but faces opposition from farmers over plans to reduce methane emissions

A landmark bill which would set a target of zero carbon emissions for New Zealand by 2050 has been tabled in the New Zealand parliament.

Prime minister Jacinda Ardern said on Wednesday that the bill, which would introduce targets for carbon and biogenic methane emissions and would establish an independent climate change commission, was aimed at addressing the "long-term challenge of climate change" - the biggest single challenge facing the world.