During Earth's last big warming cycle, something dramatic happened in the Southern Ocean.

Two film-makers have just toured the country meeting Kiwis doing their bit for the planet.

The message sends hope that by 2060 our climate is not in a state of disarray.

NZ's earliest settlement, the Wairau Bar, has since been hit by major quakes and tsunamis.

Swamp kauri - a lucrative commodity - is also critical for understanding past climates.

Shaun Hendy wants to walk the walk on climate by taking train instead of plane this year.

A "trifecta" of big drivers combined to make this summer what will be NZ's hottest ever.

What could be a record summer has come with warmer water that "revved up" Cyclone Gita.

Tough breeding season in Otago got even tougher yesterday when 'webcam' chick was killed.

"We are seeing changes in our climate, an increase in severe weather events."

What are tropical cyclones and how do we forecast them? Jamie Morton explains.

Unexplained decline in lower stratosphere worries scientists.

The war over water hit boiling point amid 2017's election. Will 2018 see tensions simmer?

Water quality, rapid urbanisation and impact of natural hazards up for talks at NZPI.

COMMENT: Climate Change presents challenges we can face with optimism.

Melting ice poses one of the greatest threats to the modern world, a professor has warned.

Law to cut emissions is ambitious, but it's just part of minister's workload.

January was the hottest month NZ has experienced since 1867, Dr Jim Salinger says.

NZ has $20b of stormwater and wastewater systems that are not up to what may be coming.

The last time summer was running this hot, Nazis ran Germany. What's been the difference?

People with multiple sclerosis are particularly vulnerable to extreme heat.

Waiau in North Canterbury records 37C as January is on track to be our hottest month ever.

Expert dubs kingfish sentinels of climate change as presence in deep south grows.

How are oceans faring with pollution, fishing and climate change? Simon Thrush explains.

Following a string of major incursions, Professor Travis Glare discusses NZ's biosecurity.

Dr Andrea Byrom says things aren't looking good for our prized native plants and animals.

Lush Fiordland could clear up disagreement over how much CO2 our forests are absorbing.

Climate scientist Dr James Renwick says time's running out to avoid the worst of warming.

Ecologist Russell Death paints the big picture on the state of our rivers and lakes.

They're called dead zones - patches of water that kill life - and NZ isn't immune to them.