New Zealand's population will reach five million in 2020 Over the next few weeks, RNZ is exploring what this means for the country on rnz.co.nz and on air.
We'll look at how immigration is increasing New Zealand's population, what has has changed as the population has grown, what has stayed the same, and who the average Kiwi now is.
Today we're reporting how the fear of climate change is making some New Zealanders question how many children they should have - or whether they should have kids at all.
Leith Huffadine has the story.
