PM

It's a game that you have to hold your breath for and all the action happens under the water. Teams from 10 countries have gathered in Hobart for the world youth championships for a game that requires skill, teamwork and a large lung capacity.

On Business PM: As the brawling continues at today's energy meeting and the Labor states decide to go it alone on a Clean Energy Target, new analysis has found it's high gas prices, not renewables, driving power prices sky high. Carrington Clarke speaks to the author of a report which says export contracts locking up much of the gas resources of the east coast have left business and consumers paying the price.

US military commanders have strongly rejected Amnesty International's report accusing coalition and Iraqi ground and air forces of violating international law during fighting to reclaim the Iraqi city of Mosul from Islamic State control. On Tuesday, Amnesty claimed thousands of Iraqi civilians had died needlessly because of 'relentless and unlawful' attacks to push IS from the city.

Brawling over Australia's energy policy has ramped up a notch today ahead of a meeting of Energy Ministers in Brisbane tomorrow. State Labor Governments are threatening to go it alone on a Clean Energy Target if the Federal Government continues to delay adopting one. Meanwhile, the Federal Government is hoping to force States to lift moratoriums on gas exploration, which it says will reduce energy prices.

Federal Environment and Energy Minister Josh Frydenberg joins PM to discuss power prices and emissions ahead of tomorrow's COAG meeting.

The New South Wales Minister for Regional Water says setting the cost of water for Broken Hill residents is out of his hands, and up to an independent tribunal. The question has been posed by the Broken Hill Mayor who fears the community will be slugged with higher costs, to cover off on the 270km pipeline. But the Regional Water Minister says the pipeline will secure the water needs of Broken Hill residents for generations to come. He says it's a huge project, and one that no other state government was able to achieve.

Scientists say they have put together the most comprehensive database of climate records for the past 2000 years. They have collected the data from tree rings, ice cores, coral reefs and sediments from lakes that show what the climate has been like.

One of the nation's last unsealed highways, which winds through Western Australia's outback, has being causing trouble for decades. It's a vital link for the resource-rich region and locals say if it was sealed it would unlock the outback to the rest of the world. But with a ballooning debt, the State Government looks set to axe funding for the highway and residents say that's like taking the foot off the gas for development.

Queensland banana growers are rallying together after the discovery of the disease on a property belonging to Australia's largest banana producers. As well as improving biosecurity measures, they're focused on growing new varieties that are tolerant to the disease.

Researchers at a New South Wales university have made significant breakthroughs in understanding what causes Irritable Bowel Syndrome. Around one in five Australians suffer from IBS which can cause everything from bloating to severe abdominal pain. The team behind the breakthroughs now hope it will re-frame understanding of the gut condition around the world.