Subsidies for coal-fired power production almost tripled in the three years to 2016-17 among G20 nations, with Australia providing among the largest support, an international study has found.

City of Sydney councillors have voted in favour of a motion that states climate change poses a serious risk to Sydneysiders.

The world simply doesn’t have enough virgin resources to support the 10 billion people who will be on our planet by 2050.

Sir David Attenborough has compared changing attitudes over plastic to the abolition of slavery, as he claimed 20 years of warnings about the issue had gone unheard.

Chinese engineer and academic Peggy Liu says Australia should closely question decisions to invest hundreds of million of dollars in new mines.

A 13-year-old schoolboy is slowly capturing the eco-ideas of his generation and asking his parent's generation to open the doors to new ideas to reduce plastic.

A stoush is looming in the multi-billion dollar recycling industry with the NSW government expected to make permanent a ban on the use of organic waste as fertiliser for farming.

38 landholders will enter into new conservation pacts that will protect more than 9300 hectares of environmentally significant land, including koala habitat.

The British ban on elephant ivory  is killing hippos, conservationists say, as poachers and hunters take advantage of a loophole in the new law.

Technology developed in NSW to convert waste plastics into reusable materials such as fuel  could be commercialised overseas or interstate first because of "massive" hurdles facing such firms in the state, the co-inventor of the pioneering process says.

Danish scientist Mette Bendixen thinks the island could become a global provider of sand, which is being released in large quantities as its glaciers recede.

As veganism gains in popularity, it has also become more political, sparking a struggle between moderates and zero-tolerance purists.

Professor Geoffrey Blainey is no stranger to controversy. Now he's challenging the view that today's climate change is either unique or largely the result of human behaviour.

Residents in south-west Sydney have been warned to look out for a hungry boa after the snake's freshly shed skin was found on a construction site. 

Australia faces an increased risk of heatwaves and bushfires this summer, particularly in dry eastern regions, with conditions worsened by the deepening drought.

Miriam Vale, which was close to running out of water, enjoyed the highest falls in Queensland overnight.

Girls possess a valuable quality of encouraging people to use their voices for what they believe in and empowering others around them. Not every girl has to lead, but through the many conversations they have every day, they spread the message and make people believe in a power everyone possesses in...

25 years ago, the Herald reported on a comprehensive climate change study that found "the warming is real" and more dramatic than previous estimates.

Young people from drought-affected communities have gathered to talk about solutions.

The Radiata Plateau, 300 hectares of Blue Mountains bushland, will be be incorporated into the NSW national park reserve system.