PRAVEEN MENON NEW ZEALAND promised its public sector would become carbon neutral by 2025 as it declared a climate emergency, a symbolic move that critics said needed to be backed with greater actions to reduce emissions. Prime Minister Jacinda Ardern said the climate emergency declaration was based on the Intergovernmental Panel on Climate Change's findings that to avoid more than 1.5 degree Celsius rise in global warming, emissions would need to fall by around 45% from 2010 levels by 2023 and reach zero by around 2050. "This declaration is an acknowledgement of the next generation. An acknowledgement of the burden…