A burst of heat from inland Australia will sweep across the south-east in coming days, challenging records for this late in the year, meteorologists said.

'Sealvester' delighted local residents for two weeks, but a health condition caught up with him and he passed away.

Prince Charles is calling for the Great Barrier Reef to be at the heart of plans for a new "blue economy" that seeks to harness the world's oceans for economic growth.

Sydney is expected to have a taste of summer-like weather in the week ahead.

The Berejiklian government has shifted some regulatory oversight for native forestry on private land away from the EPA, a move opponents say further undermine biodiversity safeguards in the state.

Parts of Sydney set record temperatures for this far into autumn as much of south-eastern Australia basks in unseasonable warmth.

Marine heatwaves are increasing in their frequency and duration at an accelerating rate in many parts of the world, especially around Australia.

The huge warm air mass that broke national records in recent days will edge eastwards, setting up Sydney for three days in a row above 30 degrees.

A wonderland of extinct volcano craters, ancient river beds and rocky reefs teeming with life has been found just off the NSW coast.

A wonderland of extinct volcano craters, ancient river beds and rocky reefs teeming with life has been found just off the NSW coast.

Gillnets trap 20,000 sharks, turtles and dugongs each year. WWF wants donations to buy the last gillnet licence and halt gillnetting in far north Queensland.

Gillnets trap 20,000 sharks, turtles and dugongs each year. WWF wants donations to buy the last gillnet licence and halt gillnetting in far north Queensland.

The heatwave that has seared south-eastern Australia for days will nudge the mercury in Sydney back towards the record April temperature set just days ago.

The heatwave that has seared south-eastern Australia for days will nudge the mercury in Sydney back towards the record April temperature set just days ago.

The divide between the Turnbull government and its Victorian counterpart over energy futures will be writ large.

The divide between the Turnbull government and its Victorian counterpart over energy futures will be writ large.

South-eastern Australia's big autumn heatwave has again pushed temperatures to record levels.

A necropsy revealed that the mammal had trash bags, polypropylene sacks, ropes, net segments and a drum, among other things, in its stomach and intestines.

A team of scientists has released a study suggesting one of the most feared consequences of climate change is already coming to pass.

Queensland's rare Mary River turtles are reaching pension age with very few teenagers to rejuvenate the species in a critical 'Night of the Living Dead' scene.