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.