Smoke from wildfires in Australia has drifted across the Pacific and affected cities in South America, and may have reached the Antarctic.
"It is real. We need to take it really seriously today, because it is happening."
The event starts at 5pm, and is open to the public.
Greg Gilpin says it was an incredible effort under the circumstances.
Unusually warm temperatures are causing it to shrink.
It will be monitored to minimise its threat to shipping.
But it's not going to be all sunning yourself in the snow.
The team was forced to retrieve the person on board.
It's only the eighth such lake of its type ever discovered.
The chill is expected to last all of next week.
They will look at the impact of climate change on New Zealand and the globe.
The discovery of an 11m fossil has answered a paleontological mystery.
"The melting is big and early."
The Wellbeing Budget delivered on mental health - but it covered a whole lot more.
GNS Science says its helping avoid a "catastrophic" event.
New Zealand scientists were involved in the research.
Thousands of chicks have been wiped out.
To celebrate World Penguin Day, Newshub looks at some plucky penguins.
It includes cut-out snowflakes, to be gifted to the families.
He warns people shouldn't believe everything they see.