Lois Williams investigates efforts to preserve the water and wildlife in Northland's Wairua River.
Groups worried about the state of New Zealand's rivers are planning to set up a national network of Environmental River Patrols at a meeting in Wellington next weekend.
Insight investigates one of the drivers behind the move, the efforts to improve the health of a major Northland river, the Wairua.
(The meeting to set up the Environment River Patrol Aotearoa is being held in the Wellington Town Hall on Saturday 24th starting at 11a.m)
Coming Up on Insight
8:12 am Sunday 6 September: Insight: Fossil Fuels - Necessity or Lethal Indulgence ?
Fossil fuels still fire many aspects of our economy.
That's despite the fact their role in adding to the CO2 levels in the atmosphere is well known.
And the search for new supplies continues, even though environmentalists warn of the climate change consequences of burning even the the known resources still underground.
Radio New Zealand's Energy Reporter, Eric Frykberg, explores what future lies ahead for fossil fuels.