Inflation is at its lowest since 1999 - and that's at the heart of the biggest problem facing the economy.

Wall Street moved higher overnight as investors found value in beaten-down stocks as the latest data from China eased concerns about the world economy.

It won't be business as usual for Iranian oil exporters. Much has happened since sanctions were tightened.

Wall Street rose, as a recovery in the price of oil offered investors confidence to pick up beaten-down stocks.

Concern about low oil prices and China's growth prospects has driven New Zealand's sharemarket lower.

The New Zealand dollar rose as oil prices gained from a 12-year low and Chinese stocks gained in afternoon trading.

World sharemarkets were down overnight as oil prices slumped to the lowest level since 2003.

United States oil futures in New York slid to the lowest in 12 years as turmoil in China's markets pushes crude closer to US$30 ($45) a barrel.

Oil prices have hit a new 11-year low, adding weight to calls for more cuts in the Reserve Bank's official cash rate.

Low oil prices plunged further, falling as low as $34.26 per barrel for Brent crude, a global benchmark.

Rokkasho reprocessing complex in a northeast corner of Japan's main island of Honshu is raising speculation.

Iran will raise its oil exports by 500,000 barrels a day within a week after the removal of international sanctions.

Oil prices rose on the last day of the year but fell as much as 35 per cent for 2015 after a race to pump by Middle East crude producers.

For an industry that already was pushing its cost-cutting efforts to the limits, the new declines are a devastating blow.

The price of petrol is falling, aided and abetted by a regional price war, but has it declined far enough, given the slump in oil prices?

Wall Street moved lower with the price of oil amid concern about the global glut at a time of weakening worldwide economic growth.

Wall Street rose after a report showed the US economy expanded more than expected in the third quarter thanks to consumer spending, and as oil rebounded.

Maui natural gas pipeline has been sold to First State Investments.

There is no doubt New Zealand's economy needs to diversify, writes Kinley Salmon. In 2013, 44 per cent of our goods exports were animal and animal products

All eyes will be on the NZ stockmarket as it opens this morning after global equity markets fell amid slumping oil prices.

The petrol pump war has moved up a gear with Z petrol stations entering the fray and slashing prices.

Fuel company Z says it has built New Zealand's first commercial-scale biodiesel plant, at Wiri, for $26 million.

Kiwis planning to fill up their petrol tanks for summer road trips can save up to 20 cents a litre off their fuel today.

Investors can't ignore so-called Black Swan scenarios following a year that surprised the world with record refugee flows and brutal terror attacks.