The family of a man who shot dead a NSW environment officer has been slapped with record fines totalling more than $700,000 for illegal land-clearing offences.

Visitors to Taronga Zoo over the next month are likely to be confronted by an unusual exhibition as they meander their way between enclosures.

A carbon price is set to return under the Turnbull government's new national energy guarantee.

Hundreds of Victorian doctors and medical staff are pressuring their super funds to quit investing in coal and oil for the sake of human health, just like they quit investing in tobacco five years ago.

Not only can our gilled friends become depressed, but some scientists consider fish to be a promising animal model for developing anti-depressants.

Households will be slightly better off under the reinvented energy and emissions policy.

What a transformation. From leather jacket Malcolm warning of fig leaf Coalition policies that will do nothing for carbon reduction, to what.... Old King Coal, Captain Reliable, Chief Power Ranger?

The Turnbull government likes to call it an energy "trilemma" – how to meet the triple challenge of an affordable and reliable electricity system that also meets Australia's international obligations to cut emissions.

Sydney may get its wettest day in more than four months later this week, bringing brief respite to the city's parched parks and gardens.

Activists took aim at the bank's refusal to rule out future investment in new coal projects.

Tony Abbott warned that any energy package agreed to in cabinet must pass a party room wary of anything approaching a clean energy target.

As portrayed in novels, the California of the future is barely habitable. Fiction? Perhaps less so after last week.

A mysterious and rare hole the size of Tasmania has opened up in the Antarctic sea ice,

Not one, not two but up to 80 quolls have been born at Mulligans Flat in Canberra's north.

One of the world's rarest parrots may have teetered closer towards the brink of extinction in the wild with no females among the first wave to return to their Tasmanian breeding grounds.

For the second time in four years, a breeding colony of penguins on Antarctica has collapsed.

The fashion house has announced it will no longer use animal fur, beginning with its spring summer 2018 collection.

Tony Abbott's speech to the Global Warming Policy Foundation provides a mix of partial truths that are designed to create a plausible whole.

The global shift from fossil fuels to renewable energy will continue regardless of political action such as the US withdrawing from the Paris climate agreement or outbursts from ex-Australian prime ministers, a senior ratings analyst says.

The NSW Energy Minister said the new laws would allow the mine to continue supplying the Mount Piper power station.

Those hoping for a long hot mostly sunny summer on the beaches and playing fields of Sydney may be in for some disappointment.

A jump in particulate pollution in the Hunter Valley has locals worried about more mines opening up in the area.

A woman has been captured on film picking up a one-metre shark in a Cronulla rock pool and throwing it back into the ocean.

Unprecedented severe heat is becoming more common in our cities, but the mercury could top 50-degrees on our worst days in the future.

The pink-tailed worm-lizard is classified as a vulnerable species.