More rain is on the way for the state, with downpours causing traffic chaos and road flooding in Melbourne.

Wild weather has caused flash flooding in the CBD, with cars swept away and emergency crews responding to hundreds of calls for help.

The same complex weather system has also caused havoc in Tasmania and Victoria with record rainfall and flash flooding.

A solitary buoy in the remote Southern Ocean has recorded a monster wave of 23.8 metres, the largest wave ever measured in the southern hemisphere.

They are among the most ferocious carnivores in Washington, capable of sniffing out frozen carcasses and tunnelling through feet of snow to crack open bones.

Sydney will soon get its first blast of winter as a powerful and complex low pressure barrels in from the southwest.

NSW Labor says an agreement to amend the $13b Murray Darling Basin Plan risks permanently crippling a key lake region in the state's far west.

Josh Roberts, 25, was on board his four-metre tinny, Rocket 1410, when he made the whopper catch on Friday.

Sydney's run of record warmth will come to sudden halt on Friday, with the first of two blasts of Antarctic chill passing over the city within days.

Australia's 2030 Paris climate pledge will be harder to achieve after the Turnbull government ended funding to its "centrepiece" emissions policy.

Sydney shivered through its coldest day since last winter but dodged the worst of wild weather that brought snow across the ranges.

Why wouldn't a lover of cities buy a farm? Farming and cities are flipsides. They sustain, need and complement each other.

Alan Jones has been sued by a government scientist of almost four decades' service after the broadcaster accused him of doctoring a report on a wind farm.

The Turnbull government has made the centrepiece of its $500m Great Barrier Reef rescue package a non-profit group whose revenue was less than $8m in 2017.

In the Rubicon State Forest, near where I live, the remaining broadly intact areas of mature ash will be gone in as little as five years.

Trapdoor spiders, carnivorous marsupials and orchids are among new additions to our threatened species list.

Australia's greenhouse gases rose for a third year in a row in 2017, led by emissions from LNG and transport sectors, according to federal government data.

Efforts to secure more habitat for koalas have triggered a shortage of supply of native timber that will spur more intensive old-growth logging, groups say.

Efforts to secure more habitat for koalas have triggered a shortage of supply of native timber that will spur more intensive old-growth logging, groups say.

London is choking from record levels of pollution, much of it caused by diesel cars and trucks, as well as wood-burning fires in private homes.

As parts of Australia set heatwave records and the government considered building new coal-fired power stations, the vast continent to the south last week quietly marked a milestone.

After years of failed promises, Victoria is on the cusp of getting its first large-scale solar power stations.

Ballarat and Bendigo faced losing electricity during the recent great eastern Australian heatwave so NSW could avoid power cuts, underscoring the parlous state of the country's grid.

I'll give it to you cold. Electricity prices are going up.

Environmental groups want more time to consider the impacts of Santos' Narrabri CSG project that will include as many as 850 wells, producing more than 100 tonnes of waste salt alone per day.