The January-through-May period was the fourth warmest of any recorded in NZ, Niwa says.

Otago town Ranfurly takes week's record for coldest place at -9.1C.

Footage has revealed the spectacular clarity of one of NZ's largest freshwater springs.

Auckland is next in line as front sweeps north.

Many spots across NZ have been enjoying their warmest May on the books - until now.

Scientists have an unlikely tool to show how fast Antarctic ice sheets are melting: seals.

Yesterday Whangārei topped the country at 23.9C, with Auckland close behind on 23.7C.

Niwa is about to attempt one of the most challenging underwater experiments ever.

An unusually shaped scientific research ship, Joides Resolution, is docked in Auckland.

New Zealand is in for a warmer winter, as one of the hottest years on record rolls on.

Lots of water improvement work in hand, and requests for lots more

The North Island's east coast is in for some heavy falls today.

Residents evacuated after torrential rain inundated Rotorua yesterday

Drinking water safe from another Tasman Tempest, says Watercare boss

Sir David Attenborough wants NZ and Oz to document all species before it's too late.

Showers due in north and south today, but mainly fine in central New Zealand.

Scientists have made unexpected discoveries about Antarctica's best-known residents.

New guidelines to help remove barriers to fish migrating through our rivers and streams.

On the rare occasion they hit New Zealand towns, tornadoes are dramatic events.

Kiwis may not know they just lived through an event freakish even under climate change.

After our La Nina-fired summer, there's a chance spring could bring a meddling El Nino.

Temperatures were more than 2C above average in our summer of extremes.

Swells of up to 4m are expected south of Haast.

850 tonnes of mud and sand flushed away seafloor life in Kaikoura Canyon.

Bottle thrown into the sea in 2010 travelled 19,133km across the world.

Experts say there are three reasons why NZ may be hit again. Jamie Morton explains.

At the moment the rain is easing, but another heavy downpour could mean trouble.

Scientists expect to find some "pretty pathetic" examples in post-summer snowline survey.

Scientists set to install listening posts deep in the high-risk Hikurangi Subduction Zone.

Undiscovered volcanic features could lie hidden not far from the Bay of Plenty's coast.