The gardens, established by the river by Governor Gipps in 1846, have celebrations and surprises in store for visitors this year

Bitcoin provokes intense debate but one thing everyone agrees on is that it has become a staggering producer of climate wrecking carbon dioxide.

When Steve Douglas drove by a neighbourhood street corner, he spotted a new and rare species of eucalyptus tree. After 25 years, more than a hundred of these trees are being planted in a secret location in a national park.

The upper house has rejected the scheme to license irrigators’ extraction during floods while a federal agency has dismissed the government’s river plans.

Shy dugongs, sea turtles and ancient microbes are all found among our seagrasses and mangroves. Why are politicians interested in these ocean meadows now?

A report by the Australia Institute has found filling in the region’s 23 mine voids would cost between $11.5 billion and $25.3 billion.

NSW Labor will reject plans by the NSW government to regulate the ability of irrigators to capture flood waters flowing across their properties.

Former South Bank Corporation chairman Steve Wilson AM has confirmed he will place an offer on Kangaroo Point’s Lamb House, while property developer Kevin Seymour ‘will again look at it’.

Even if the federal government takes no action, the states’ own efforts to reduce climate change would enable Australia to meet current emission reduction targets.

Who cares about the fate of Australia’s 243 known frog species? It turns out that many thousands of us do.

Alpine cattle graziers and environmentalists form an unlikely alliance in a bid to stop logging in Victoria’s high country.

The NSW SES received more than 1100 calls for help on Thursday, as the big wet brings flash-flooding, landslips and hazardous surf alerts.

The publication of the state’s new koala habitat policy has revealed a senior regional NSW official has the right to reject management plans by councils.

More than 75 organisations and individuals have signed an open letter calling on the Ross Trust to withdraw its plans to expand its quarry on the Mornington Peninsula and destroy bushland.

A three-day burst of rain from Thursday is likely to be the wettest for Sydney since at least last July, with up to 100 millimetres expected on Saturday.

When a critically endangered bird starts to lose its birdsong, conservationists know the species is in even more dire straits than its dwindling numbers suggest.

The City of Sydney will spend $377 million over the next decade to boost tree cover, adding about 700 trees a year to parks, lanes and roads.

One Liberal MP is calling for the governments to subsidise rather than tax electric vehicles as the industry ships its products to more welcoming markets.

The Berejiklian government has been accused of seeking to mask the effect of the 2019-2020 bushfires to protect the logging industry after it asked the main resources watchdog to prepare a secret study.

The government is preparing a “network management plan” for marine parks stretching from Byron Bay to Batemans Bay, stoking fears from advocates of both conservation and recreational fishing about the possible outcomes.