About 2000 people a year have 'primary contact' with wastewater from the three untreated discharge points.

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Plans to convert a defence site into a freight hub in Sydney's south-west can proceed provided a plant not seen in almost 200 years is protected.

Taking to their local parks and waterways on Sunday, Clean Up Australia Day volunteers picked up more than 15,000 tonnes of rubbish.

Up to 1000 pieces of rubbish occupy each kilometre of Australian coastline, statistics from the Australian Marine Debris Initiative Database show.

The Berejiklian government has marked exactly a year since public submissions closed for its NSW Koala Strategy.

Environmental groups have welcomed the establishment of an independent panel to examine coal mining in Sydney's water catchment.

The waters around the controversial Port Stephens’ fish farm is alive with dozens of large sharks that have moved in for a feeding frenzy amid concern more kingfish have escaped.

Australian and US scientists - with US defence funding - have big plans for six islands in WA. But is gene technology a safe way to beat invasive species?

Wanted: discrete volunteers who can distinguish between a deep, double “woo-hoo” hoot and a “soft, deep, and continuous low oom oom oom” sound.

The fate of a 50-year-old national park in western NSW is "at the mercy of water managers", as the battle for the Murray-Darling Basin hots up.

Seismic testing for gas and oil off the NSW coast has unearthed a rift between the state Coalition Energy Minister and his federal counterpart.

An old timber bridge built before the 1860s under what is now known as Kingsford Smith Drive has been uncovered during a $650 million road-widening project.

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Balloons are now recognised as one of the top three threats to marine wildlife.

The Berejiklian government continues to withhold data on how much land has been cleared, particularly since its overhaul of native vegetation protection laws.

A precinct encompassing the Shrine of Remembrance and Domain Parklands joins the Sydney Harbour Bridge, Uluru and the MCG on the National Heritage List.

Brisbane's first electrical power connected Parliament House and the Government Printing Office in 1884. Now the 134-year-old electrical cables will be exposed.

• EXCLUSIVE

Australia is ridding its cosmetics and soaps of plastic microbeads, but it may have unintended consequences, a leading scientist has warned.

The wallaby, named "Christine", is now doing well after being left overnight to recover from her ordeal with some water and wallaby snacks.

The failure of a fish farm "fortress pen" that saw 20,000 kingfish escape into the Port Stephens' marine park has led to calls for an independent review of the controversial project.

There are fears thousands of "ravenous" kingfish that escaped a state-government jointly run fish farm off Port Stephens will devastate the marine park's wild fish population.

Bull sharks are are more common in Sydney's waterways than you probably want to think about.

The Turnbull government has opted out of an international pact to protect three species of threatened sharks, drawing accusations that it was undermining global conservation efforts.

What happens when one native species is doing too well on a property bought to protect many vulnerable ones can be a problem.

The Turnbull government's pledge of an additional $60 million to help improve the health of the Great Barrier Reef has been dismissed by environmental groups and scientists as insufficient and a "wasteful publicity stunt".

The plan, to cost about $60 million over the next 18 months, will include funding farmers to reduce sediment run-off and innovative research.

Environmentalists have called on politicians to stop using the Mornington Peninsula National Park as 'a political football'.

The court said that law did not prevent killing one species to advance the scientific understanding of another.

The Swamp Park's general manager thought he was looking at trees sticking out of the water. Then he saw teeth.

The camping equipment left behind filled four cars, one ute, a van and three trailers.