AAP

The Australian share market has opened lower.

The Australian dollar lower as global markets watch developments in Greece's ongoing debt emergency, with renewed hopes of a breakthrough.

Gold has given up earlier gains after US Federal Reserve Chair Janet Yellen said she expected the central bank to raise interest rates sometime this year but pointed to concerns that US labour markets remain weak.

A record one-day jump in the price of Australia's biggest export is not expected to be the spark of a meaningful recovery.

The Australian share market has closed higher, boosted by a lift in iron ore prices, a recovery on Chinese markets and optimism around Greece.

The number of 457 visa applications that require employers to seek Australian workers first could slump to just 25 per cent because of free trade agreements, unions say.

Australians have sent large sums of money to a Dubai bank account in a bid to buy shares in lithium battery and electric car maker Tesla, but have been scammed.

Iron ore prices have jumped almost 10 per cent, just a day after plunging to a 10-year low.

The Australian share market has opened almost one per cent higher following a rebound by the big miners and a recovery on overseas markets.

Spot gold has climbed after a recovery in Chinese shares cooled fears of a wider rout in the major bullion consumer while strength in the US dollar kept a lid on gains.

US stocks have finished higher, bouncing back from deep losses in the prior session following strong gains in Asian and European equity markets.

Oil prices have risen after a spate of losses, as a rebound in Chinese stocks somewhat eased concerns about financial turbulence in the world's biggest energy consumer.

The Australian dollar has lost ground despite better-than-expected jobs data, a recovery of Chinese shares and a new Greek bailout proposal.

Ambulances are being diverted from Perth's new Fiona Stanley Hospital and operating theatres have been closed because of flooding for the second time in three months.

The Australian share market has rebounded from its early losses due to big gains by the miners, strength on China's market and better-than-expected jobs figures.

Iron ore prices have plunged to a fresh six-year low as the commodity gets caught up in the fallout from China's massive sharemarket plunge.

Qantas has welcomed an interim decision by the competition watchdog for the carrier to expand its partnership with American Airlines on services between Australia and the US.

The jobless rate in Western Australia rose to 5.8 per cent in June, while a small increase in the national rate has economists warning it hasn't yet peaked.

At 1028 AEST on Thursday, the benchmark S&P/ASX200 index was down 64.5 points, or 1.18 per cent, at 5,405 points.

The Australian dollar has bounced back from a six-year low after the greenback fell amid a lengthy outage on the New York Stock Exchange.

The New York Stock Exchange halted trading Wednesday for more than three hours due to technical problems that it said were not caused by hacking.

US oil prices have dropped for the fifth straight trading session as domestic crude stockpiles rose again, but London prices inched higher.

Gold has risen as the US dollar has softened, reversing after touching a four-month low as markets watched the tumble in Chinese equities and the unfolding Greek debt crisis.

The Greek crisis may have spooked Australia's financial markets, but it is China that will potentially give Treasurer Joe Hockey nightmares.

The Shanghai composite index was down 5.9 per cent in trading today as more than 1,300 Chinese companies entered trading halts.

Worries about China have been added to concerns about Greece, pushing the Australian share market down 2 per cent.

Atlas Iron says it has protected its finances against an iron ore price that has plunged below $US50 a tonne.

The corporate watchdog is investigating whether key market indexes, such as the Australian share market's top 200 companies, are being rorted.

The Australian share market has opened lower.

The Australian dollar has broken a new six-year low as the greenback rallies.

US stocks have finished higher in a topsy-turvy session, rallying after worries about Greece and China caused deep losses in early trade.

Gold has fallen to a near four-month low, while silver has sunk nearly seven per cent and platinum has dropped to a 2009 low, as the US dollar rallied ahead of an emergency eurozone summit on Greece with the country's banks rapidly running out of cash.