Sweet potato producer Harvest Road wants to change WA's reliance on the east coast with an expansion of its Brickhouse Station production in the Gascoyne.

In a bid to free three of its executives who have been detained in Mali over a tax dispute, Resolute Mining agrees to pay $US160 million ($242 million) to the African country's government.

Tilapia is a biosecurity nightmare in Australia but popular on many menus overseas. Some in the fishing industry think if you catch the pest fish in Queensland you should be able to eat it.

Rescue workers are continuing to search for trapped survivors after a building collapsed in Tanzania and killed 13 people.

The corporate regulator alleges NAB did not respond to 345 hardship applications within the legal time frame. NAB has apologised and says it's changed its approach.