Wide Gulf between rhetoric and reality for fossil fuels and renewables

Do big investments in solar energy point to a different future for the oil-rich nations of the Middle East?

An unusually quiet period for cyclones in the Australian region may come to an end within days.

Showers and possible storms will sweep across Sydney on Tuesday afternoon

The world's major meteorological agencies have declared 2016 to the hottest year on record - making it three new highs in as many years - as increases in greenhouse gases drove global warming.

Head of international energy body says policies are important, but the economic facts "are stubborn".

A political divide is forming over renewable energy's future in Australia.

National demand for solar is up slightly, but NSW is going backwards

Have a spate of bites and sightings up and down the NSW coast raised the odds that an attack awaits beachgoers this summer? Peter Hannam investigates.

Australia's top business groups have cautioned the government against making any more changes to the renewable energy target.

Sydney has marked its hottest ever month, with extended warm spells setting records at all metropolitan sites.

Energy giant lodges its long-delayed application to develop the controversial Narrabri coal seam gas project.

Once thought to be aberrant behaviour, cannibalism is common in the natural world - and for many species, not necessarily a bad thing.

Sydney's latest summer heatwave has peaked and temperatures are plummeting - but the relief won't last long as another hot spell will arrive within days.

Sydneysiders struggling back to work and school this week are likely to get little early relief - particularly overnight - from the city's record-breaking heat.

Coal mining in Sydney's water catchment could prove an early test for new Premier Gladys Berejiklian

NSW students returning to school this week face extreme heat on Monday and Tuesday with temperatures reaching into the 40s for much of the state.

The Andrews government will pledge to cut Victoria's greenhouse gas emissions by up to a fifth by 2020, putting it at odds with Canberra on tackling climate change.

It will be a blazing start to the new school year.

Despite record-high temperatures so far this summer, Sydney has avoided serious bushfire over the holiday period - though the Rural Fire Service warns the danger is not over yet.

Sharks have hogged the spotlight this summer. But what about the smaller creatures that inhabit our waters. Fish that can go from being female to male or sea cucumbers that can reorganise the position of their vital organs before splitting in two. They all live in Australian waters: in our bays, harbours and deep oceans.

Claims of a cover-up as a plant lost for two centuries turns up on a development site.

'Took a bit of practice' to get two shooters in sync, one with contraceptive and the other with marker dye.

A rodeo in New Zealand is to use men dressed as sheep because chasing real sheep is banned.

Meet Taronga Zoo's newest addition - one of the world's tiniest and rarest primates, a mohawk-sporting baby cotton-top tamarin.

The world's first transgenic ants offer scientists the chance to explore the evolution of animal societies - and, perhaps, our own.

Sydney is heading for its hottest ever January at least for overnight temperatures.

Households with solar panels could triple within five years and those with batteries rise even faster.

The number of mammals used in animal testing could be cut dramatically thanks to moth larvae, scientists say.

Going for a summer's dip at the beach was a real pain for some people this past weekend.

There's little sign of summer taking a holiday this week, with more scorching days and a string of warm nights ahead.

More used to marching penguins, it was a different kind of movement that swept across one of the most remote places on the planet in recent hours.

How tiny Huonville does well by doing good on the environment front.

The man also used the animal's carcass to threaten passers-by in a bizarre act of animal cruelty.

Just moments after President Donald Trump took the oath of office on Friday, the official White House website was transformed to wipe out all mention of climate change.

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Damaging winds pass Canberra by with severe thunderstorm warning cancelled.