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?
Environment
The charts that show just how hot it was in 2016
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.
Energy chief: why Trump is unlikely to derail renewables
Head of international energy body says policies are important, but the economic facts "are stubborn".
Early skirmishes point to a war over renewables lasting well into 2017
A political divide is forming over renewable energy's future in Australia.
NSW drops off the solar pace as demand shifts towards business
National demand for solar is up slightly, but NSW is going backwards
Shark!
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.
Sydney on course for hottest ever January as heat refuses to budge
Sydney is heading for its hottest ever January at least for overnight temperatures.
Tired of energy bills, households take matters into their own hands
Households with solar panels could triple within five years and those with batteries rise even faster.
Moth larvae could be a saviour for lab rats
The number of mammals used in animal testing could be cut dramatically thanks to moth larvae, scientists say.
Bluebottles put the sting back into summer
Going for a summer's dip at the beach was a real pain for some people this past weekend.
Mercury to hit 42 before some relief arrives
There's little sign of summer taking a holiday this week, with more scorching days and a string of warm nights ahead.
'Penguins for Peace': Anti-Trump protests even reach Antarctica
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.
Australian high school scores international green technology gong
How tiny Huonville does well by doing good on the environment front.
Police appealing for witnesses to 'sickening' animal cruelty case
The man also used the animal's carcass to threaten passers-by in a bizarre act of animal cruelty.
White House website removes Obama climate change initiatives
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.
Severe thunderstorm warning cancelled for ACT
Damaging winds pass Canberra by with severe thunderstorm warning cancelled.
Taronga Zoo's red panda cub nursed back to help after neck injury
An adorable baby red panda who suffered horrific neck injuries has a second lease on life thanks to a cuddly toy and a Sydney zookeeper.
'God's country' up in flames as fire rips east near Tarago
A large fire swallowed more than 3300 hectares as it burned east from Lake George on Tuesday afternoon.
Sydney 30 degrees at midnight as city endures hot summer night
Sydneysiders have endured yet another sticky, stifling night of summer, with the temperature not dipping below 28 degrees in the city all night.
Snakes? Spiders? Jellyfish? Nope. Our most dangerous animal is the bee
An analysis of more than a decade of Australian bites and stings has found that the bee poses the biggest public health threat.
'Extreme rain' ahead as temperatures continue to rise
Climate change will result in higher humidity and more severe rainstorms, according to new Australian research.
Nine fin facts about sharks in Victoria
Questions about sharks in Victoria that you probably have wondered about at some point, but never found the answers to.
Hot night on Tuesday as minimum of 25 predicted for Sydney
After a reprieve from extreme heat on Sunday, Sydney is in for one hot night on Tuesday.
Final homes reconnected to power after freak Canberra windstorm
ActewAGL and SES crews were on Sunday still cleaning up damage from Friday's freak windstorm.
No warning: Freak windstorm takes Canberra by surprise as major clean-up gets underway
It dropped the temperature nine degrees in nine minutes and now a major clean-up is underway in the capital after Friday's freak windstorm.
Sydney suffers through record hot night as mercury hits 30C at 2am
You're not wrong: Sydney has just tossed and turned through a night of "quite exceptional" heat.
Total fire ban for Sydney as scorcher forecast and fire risk soars
As NSW residents yet again brace themselves for scorching heat with the mercury set to rise above 40c, authorities have issued a total fire ban across most of the state.
Light sprinkle follows warm night with cold and showers to come
After a warm night, Melbourne woke up to light rain on Friday, a little taster of the heavier falls expected later on.
AGL fined $124,000 for breaching political donations laws
Energy giant AGL has been fined $124,000 in the NSW Land and Environment Court for failing to disclose political donations when making planning applications in the state.
Vegan denied Swiss citizenship by neighbours upset at her animal campaigns
A woman in Switzerland has been refused citizenship, and therefore a passport, because her "annoying" vegan campaigning has rubbed her neighbours up the wrong way.
Power cuts, fires as heatwave begins to recede - for now
Power cuts, sizzled tennis players and runaway grassfires featured in another scorching summer's day in and around Sydney, with only a limited respite before the heat returns.
Storms to herald brief respite for Sydney from 'scorching' heat
Sydneysiders are in for a roasting as high temperatures combine with rising humidity to make for an exceptionally uncomfortable day.