Stefanos Tsitsipas and Daniil Medvedev are battling to face Rafael Nadal in the Australian Open men's singles final. Follow live.

Downplaying the prospect of war in Ukraine, Russian ambassador Alexey Pavlovsky says Australia's decision to withdraw diplomats' families from Kyiv is "elevating tensions". 

The BA.2 subvariant, which some have nicknamed the "stealth" variant, is growing faster than the original Omicron in some places. Here's what we know.

As WA records nine new local infections, Premier Mark McGowan reveals casual contacts won't need to get tested and isolation periods for COVID cases will reduce when the state reaches an as-yet-undefined caseload.

Retiring tennis champion Dylan Alcott farewells the game and pays tribute to Ash Barty ahead of her Australian Open final.

The Morrison government's funding commitment has been criticised by a scientist who says it will mean nothing if global carbon emissions are not reduced.

A South Australian woman turns to social media in a desperate plea for authorities to ease restrictions on hospital visitors.

Danielle Collins is a big fan of Barty's game, but she is confident she can come up with the tactics to spring an upset against the world number one in the Australian Open women's final.

Severe weather has destroyed homes on the state's Eyre Peninsula and cut off major freight routes with Western Australia and the Northern Territory.

Former White Ribbon ambassador Andrew O’Keefe will remain in custody after he was yesterday charged with assaulting a woman at his Sydney apartment.

Police in Victoria and NSW have raised concerns about the insidious criminal activity of needle spiking, with recent reports affecting women at venues in Echuca and Newcastle.

Family members honour the proud Arrernte Anmatjere woman, who gave people "strength of heart and spirit" through her advocacy for Indigenous rights — and made history when she starred in the 1955 classic film Jedda.

GWS defenders Nicola Barr and Louise Stephenson combine for five goals to lead their team to victory over the Western Bulldogs.

The NT's peak Aboriginal health groups send a scathing letter to Chief Minister Michael Gunner accusing the government of "significant failure" managing the territory's COVID-19 outbreak and calling for more action.

A letter written to a 12-year-old girl in Lithuania has been delivered almost 51 years after it was sent by a pen pal in Poland.

An historic century from captain Heather Knight has swung the momentum in the Women's Ashes Test in Canberra, but Australia remains on top after day two.

Northern Territory Police Commissioner Jamie Chalker says that if the territory is cut off from Queensland, as well as SA, due to flooding, then an emergency response could bring in essentials. 

Independent Omicron modelling from UWA indicates that despite the state's delayed opening, it will be hard to achieve a higher level of immunity in WA than what was in place on February 5.

A federal judge invalidates the results of an oil and gas lease sale in the Gulf of Mexico, saying the Biden administration failed to properly account for the auction's climate change impact.

The NSW Premier says the state is tracking "within capacity", according to the latest COVID-19 modelling, as the state adds 35 historic fatalities to the total death toll.

Five South Australians with COVID-19 die in the last reporting period, all of them over the age of 80. Hospitality densities will double and QR code check-ins will no longer be required at retail venues.

Australia's slim win over Thailand in the final Asian Cup group game showed the squad is still battling with the ghosts of its past.

On a barren lava plateau in Iceland stands an entirely new kind of industrial facility that sucks carbon dioxide from the air and traps it in stone. So, is this part of the solution to climate change?

Kyle Hippchen still hasn't watched the Netflix series on the three-day SpaceX flight that he should have been on. "It hurts too much," he says. 

Local wildcards Jaimee Fourlis and Jason Kubler finish runners-up in the Australian Open mixed doubles tournament following a straight-sets defeat to Kristina Mladenovic and Ivan Dodig.