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 29 November: Insight: Obesity Crisis
The obesity crisis is costing the country $1bn a year and threatens to cripple the health system.
Next year, it's predicted to overtake smoking as the country's biggest health issue. One in three adults and one in ten children are obese.
The figure for Maori and Pacific people is much higher.
Sharon Brettkelly explores suggested solutions
8:12 am Sunday 6 December: Insight: Politics and the Public Service
Academics and the union representing public servants worry the Public Service is under increasing political pressure.
They say political advisers in ministerial offices need a clear set of rules to govern their conduct.
Brent Edwards explores the relationship between politicians and government workers.