The World Today

Research has uncovered Melbourne's part in one of the great debates in music - musical pitch. A wealth of historical material shows that everyone from Dame Nellie Melba to the authors of the Treaty of Versailles were weighing in to the battle for pitch standardisation.

It's inspired by the mating rituals of the Australian Red Back Spider. In her first live action short film, Archibald Prize winner Del Kathryn Barton, celebrates female power like never before.

Negotiators say peace talks in Kazakhstan have been successful. Russia, Iran and Turkey have agreed to support the shaky ceasefire that's been in place since late last month. Meeting in the Kazakh capital of Astana, the countries have announced that they'll create a monitoring mechanism to ensure compliance with the truce. But Syria's opposition delegation say they're not party to the agreement and have many reservations.

Wastewater analysis across Adelaide, shows ice use in the city has hit a record high, concerning the Government and support groups alike. Drug use data has found the number of doses per week of methamphetamine use, per thousand people, has tripled since 2012. Experts say a broader range of rehab services are desperately needed in South Australia, along with a national focus on harm reduction.

'Fake News' has beaten both 'Halal Snack Pack' and 'alt-right' to Word of the Year honours, according to Macquarie Dictionary. Each year the committee selects words from a range of categories, including fashion, business and sport, to compete for the title. The dictionary's editor says Fake News won in part because of its broad influence.

The Treasurer has used language that echoes Donald Trump's rhetoric to promote Australia's support for free trade. Overnight Scott Morrison said that he's pursuing an 'Australia First' policy when it comes to trade deals, which is similar to the President's 'America First' stance. But two former Trade Ministers are split on how to interpret the rhetoric, and whether the Government is trying appeal to ward off a growing anti-trade sentiment here in Australia.

In a landmark ruling in London overnight, the Supreme Court ruled eight to three that the government must give parliament a vote before it can trigger Article 50 to begin the Brexit process. This could pave the way for amendments to soften the impact of Britain's exit, with the opposition already flagging changes.

The US President has reiterated his belief that the election was rigged against him. Donald Trump has repeatedly said that millions of people illegally vote, raising fears that voter fraud cost him the popular vote. It's an accusation his team has backed, though it's yet to provide any evidence.

We speak to Andrew Shearer, who was foreign policy advisor to prime ministers John Howard and Tony Abbott, about what US President Trump's foreign policy could mean for Australia and the world.

A senate inquiry has been told this morning that some workers on the cusp of retirement are being short-changed by rogue employers who are holding back some of the compulsory contribution. The inquiry was called after research released late last year showed around a third of Australians were missing some or all of the employer super entitlements. But the Australian Tax Office says the complaints about a super rip-off are overstated.