Sydney residents woke to a smoky sunrise due to hazard reduction burning around the city.

The Commonwealth Bank has been blasted for its first climate policy statement that was scant on detail and lagged the commitments of its banking peers in Australia.

Forest regions of NSW, including areas around Sydney, are rapidly drying out, raising the risk of early and significant fire activity.

Sydneysiders are making the most of a warm winter, enjoying the outdoors in parks and beaches across the city.

A possible expressway extension may be the reason for stalling a push to give the Royal National Park global recognition, the Greens say.

Chickens have helped Mark Killen change the way he lives. They have made the grass greener, both on his property and in the way he has viewed his world as a farmer.

A new generation of poultry breeders is reviving interest a dying art as age-old practices raises animal cruelty concerns.

World temperatures are likely to rise by more than two degrees Celsius this century.

Sydney has posted its driest July in more than two decades but the city's parched parks and gardens should soon start to collect some much-needed rain.

​A new technique using artificial intelligence to predict where deforestation is most likely to occur could help the Democratic Republic of Congo (DRC) preserve its shrinking rainforest and cut carbon emissions, researchers have said.

The decision by the Berejiklian government to award a major role in the state's new container deposit scheme to Coca-Cola Amatil and other companies opposed to it was an act of stupidity, the NSW Greens say.

Sydneysiders will be leaving their winter woolies at home on Sunday to welcome what is expected to be the warmest July day on record.

The Berejiklian government needs to refer the issues of water theft and industry collusion to the corruption watchdog, green groups say.

Premier Gladys Berejiklian says she does not need to ban plastic bags in NSW, "because 80 per cent of plastic bags" will already be banned by the supermarkets themselves.

The birds learned to sing from each other, reduced populations mean their song may be lost.

The project to reverse ecological damage in the Murray-Darling Basin is not going well.

In the summer of 2010, Russia faced a severe drought, a heat wave and a series of catastrophic wildfires, destroying a third of the country's wheat harvest. Half a year later, the Arab Spring began.

Britain's plans match a similar pledge made this month by France.

Deputy Prime Minister Barnaby Joyce has stoked the controversy over claims of water theft in NSW aired by the ABC, dismissing the report as a ploy to strip more water off rural communities.

Temperatures plunged to minus 8.7 on Saturday morning, with more cold nights ahead.

Federal-state tensions over water issues have escalated with South Australia demanding Barnaby Joyce, the federal water minister, drop his nomination of an irrigation lobbyist to the Murray Darling Basin Authority's board.

A severe weather warning has been cancelled for the ACT and parts of southeastern New South Wales, after damaging winds were previously forecast for Wednesday morning.

The Turnbull government has released draft management plans for the nation's marine parks that amount to an "unprecedented rollback" of protections, a coalition of 25 environmental groups say.

A top NSW bureaucrat was on Tuesday refusing calls to stand down despite allegedly offering privileged access to government documents to irrigation lobbyists.

The possibilities of quantum computers are much-hyped but even the search for breakthroughs promises lucrative spin-offs.