WATCH: New Zealand Herald reporter Olivia Carville shares her thoughts on her Black Gold investigation into the secret behind hair extensions sold in Kiwi salons.

When it comes to eating ice cream, the people of Invercargill are New Zealand champions.

Researchers in the United States and China think they might have found many - or even most - of the 30 to 60 million 'missing girls' in China.

Black Gold: The billion-dollar human hair trade

About half a dozen online retailers are selling "pure, hand-bottled, pollution-free, oxygen-rich air from New Zealand" to people in China's smoggy northern cities.

A young man chained his girlfriend to himself and forced her to sleep on the floor of the internet cafe while he played League of Legends.

New Zealand students are performing below the international average when it comes to maths, a new study shows.

COMMENT: Facebook's Mark Zuckerberg is willing to try just about anything to get his company back into China.

A gruelling 7km hike along China's giant wonder takes Catherine Gaffaney's breath away.

A double amputee has become the subject of debate on social media after being rejected a housing loan by two banks because he is unable to provide fingerprints.

Gold Coast Mayor doesn't believe it's too soon after the Dreamworld disaster to start planning another theme park in the region.

The controversial deal which will see meat processor Silver Fern Farms sell a 50 per cent controlling stake to Shanghai Maling is set to be completed.

The extension of New Zealand's Free Trade Agreement with China has been welcomed by exporters

Prime Minister John Key has announced the launch of negotiations to upgrade the China Free Trade Agreement.

The owner of franchise rights for the Esquires Coffee chain is seeking to raise up to $10 million for growth in China.

Eight people, including one Kiwi, have been arrested in a massive drug smuggling bust of $54 million worth of liquid meth found on a boat on a northern Sydney beach.

Searching for "Kim Fatty the Third" in China? You're out of luck.

It's been revealed preinstalled software in Android phones sends data to China every 72 hours.

Motivated by a weakening yuan, surging domestic housing costs and the desire to secure offshore footholds, Chinese citizens are snapping up overseas homes at an accelerating pace.

This exclusive Australian precinct is already up to 80 per cent foreign owned and mostly by Chinese investors.

US Secretary of State John Kerry says a failure of trade benefits to flow further is a failure of social policy, not of trade policy.

GRAPHIC CONTENT: A baby boy dropped 9m to his death down the side of an escalator in China after his grandmother lost her footing.

China has big, ambitious plans for Mount Everest and trekking purists aren't going to like it.

A new law will limit free expression even further.

China's biggest day of shopping has kicked off with big name stars, and retailers are cashing in.

As Donald Trump's presidential victory sinks in, Government and experts are starting to count the potential cost to New Zealand's climate change commitments, its defence ties, and even its core values.

When you consider the way things run in China, corruption starts to look very different.

A potentially drastic fall in China's reserves risks reviving last year's currency panic and further rattling world stock markets.

The US presidential election has become an object lesson in everything that ails a country long seen as a beacon of freedom and hope.

Passengers from a China Southern Airlines flight that made an emergency landing at Auckland International Airport this morning, are